The Cambridge Face Memory Test Long (CFMT+) and the Glasgow Face Matching Test Short (GFMT-S) are frequently used tests in face recognition research. No test-retest results in conjunction with internal consistency, mean inter-item correlations (MICs), and pre-post mean differences have been reported. The internal consistency and the MICs provide insights into the homogeneity of items. In an online study (N = 72), we investigated the test-retest reliability, Cronbach’s α, split-half reliability, MICs, and retest mean differences for the CFMT+ and the (...) GFMT-S. The CFMT+ showed satisfactory reliability coefficients above.88, whereas the coefficients of the GFMT-S were mainly dissatisfactory and below.75. We argue that task characteristics like heterogeneous stimulus material might lower MICs, response behavior might enhance reliability, and practice effects might increase the means of the CFMT+ in repeated measurements. Therefore, an integrative evaluation of different psychometric parameters helps explaining variations of reliability in face recognition tests. (shrink)

Background This study examined whether the effects of a sit-stand desk (SSD) intervention on employees' musculoskeletal complaints (i.e., intensity and prevalence) and activation (i.e., vigilance and vitality) persist or fade out and whether velocity and acceleration of health improvements can predict medium-term (six-month) and long-term (24-month) improvements. Drawing from dynamic models of self-regulation, as well as the psychological momentum theory, we hypothesized that velocity and acceleration of health improvements in the early stages of the intervention would predict medium-term health improvements, (...) which sustain long-term. Methods We used data from a six-month seven-wave randomized controlled trial with employees in mostly sedentary occupations and supplemented this by follow-up data from the same participants 18 months later, resulting in eight waves. Results Bayesian structural equational modeling revealed no significant intervention effect after 24 months implying a fade-out. But more importantly, velocity and, partially, acceleration of health improvements at earlier stages predicted medium-term improvements in musculoskeletal complaints and long-term improvements in vigilance. Conclusion The findings of this study suggest that positive intervention effects fade out over time and health effects benefit from prompt progresses at the beginning of the intervention, warranting exploration in prolonged longitudinal studies. (shrink)

The current imaginary mock-crime study examined innocent interviewees’ (N = 128) planned counter-interrogation strategies and their willingness to disclose critical information as a function of (a) the type of secondary act (irrelevant to the crime under investigation) they imagined having executed at the crime scene (lawful act vs. unlawful act) and (b) the presence of suspicion directed towards the interviewees (suspicion vs. no suspicion). Results show that, to be honest, was the most frequently reported strategy among lawful as well as (...) unlawful act participants. In contrast, none of the lawful act participants reported the strategy to be deceptive, whereas 35.9% of the unlawful act participants did. When no suspicion (vs. suspicion) was directed towards unlawful act participants, they were less willing to voluntarily share critical information on their true intentions at the crime scene. Consequently, seemingly easy “no suspicion” situations appear to promote the application of more deceptive and evasive behavior in unlawful act interviewees and might therefore put them at risk of being wrongfully assessed as guilty of the crime under investigation. (shrink)

Bullying often results in negative coping in victims, including an increased consumption of alcohol. Recently, however, an increase in alcohol use has also been reported among perpetrators of bullying. The factors triggering this pattern are still unclear. We investigated the role of empathy in the interaction between bullying and alcohol use in an adolescent sample (IMAGEN) at age 13.97 (±0.53) years (baseline (BL), N = 2165, 50.9% female) and age 16.51 (±0.61) years (follow-up 1 (FU1), N = 1185, 54.9% female). (...) General empathic distress served as a significant moderator of alcohol use in perpetrators (F9, 493 = 17.978, p < 0.01), which was specific for males and FU1. Male perpetrators, who are generally less sensitive to distress, might thus be more vulnerable to alcohol abuse. (shrink)

This study expands on past deceleration and slow consumption research by introducing and validating a measure of need-for-deceleration, an individual's motivational ability to engage in activities aimed at slowing down the perceived fast passage of time. Following initial scale development, two studies establish construct validity by placing need-for-deceleration into a nomological network. Results indicate that the measure correlated with, but was distinct from, variables involving negative affective states, such as state anxiety and neuroticism. Need-for-deceleration scores were not related to materialism, (...) but negatively correlated with self-efficacy, life satisfaction, work-life balance, and conscientiousness. Correlations were positive with need-for-uniqueness, future time orientation, and susceptibility to normative influence. Need-for-deceleration was also associated with regulatory focus (positively with prevention, and negatively with promotion focus). To explore criterion validity, a third study establishes associations between need-for-deceleration and consumer lifestyle variables. Developing and validating the scale can help researching and managing products relating to the consumption of time, wellness, mindfulness, and simplicity. (shrink)

Objective Chairwork is one of the core experiential techniques of Schema Therapy (ST) which is used in the treatment of patients with borderline personality disorder (BPD). However, little is known about how people with BPD experience chairwork. The aim of this study was to explore the experiences of patients with BPD with chairwork in ST. Method Qualitative data were collected through semi-structured interviews with 29 participants with a primary diagnosis of BPD who experienced chairwork as part of their ST treatment. (...) The interview data were analyzed using qualitative content analysis. Findings Many participants reported initial skepticism, and difficulties with engaging in chairwork. Specific therapist behaviors as well as some external (e.g., restricted facilities, noise) and internal factors (especially feeling ashamed or ridiculous) were named as hindering factors. Participants described several therapist behaviors facilitating chairwork such as providing safety, clear guidance through the process as well as flexible application of the technique according to their needs, and sufficient time for debriefing. Participants experienced emotional pain and exhaustion as short-term effects of the technique. All participants reported positive long-term effects including an improved understanding of their mode model as well as positive mode changes (e.g., less Punitive Parent and more Healthy Adult Mode), greater self-acceptance, improvements in coping with emotions and needs as well as improvements in interpersonal relationships. Conclusions Chairwork is experienced as an emotionally demanding but valuable technique. Based on the participants' statements, the delivery of chairwork can be optimized which can help to improve treatment outcome. (shrink)

This paper addresses how leadership can be conceptualized in times of dispersed and team working structures. The Dispersed Leadership Theory in Teams proposes three distinguishing types of leadership, which include interactional leadership exerted by leaders; team leadership provided by team members; and structural leadership influenced by work and organizational factors (i.e., task, organizational structures, and customers). It is assumed that these three types of leadership simultaneously exert influence on follower's attitudes and behaviors. We outline the theory, review empirical evidence based (...) on the model and discuss the strengths and limitations. In conclusion, we discuss the emerging topics for future studies. (shrink)

Team process improvement, a key factor to enhance and sustain team as well as company success, is known as the continuous reflection and adaptation of team work behaviors. In this article a conceptual framework which models team process improvement is presented. After defining the concept its two-dimensional structure and its relation to team performance, the explanatory value of collective cognition and affective-motivational variables acting as mediators, and team characteristics as moderators (i.e. task interdependence and the degree of virtuality) are derived. (...) Finally, implications for research and management of process improvement in teams follow. (shrink)

The purpose of this paper is to review the literature on self-leadership in teams; extend self-leadership theory by focusing on the underlying processes in teams and moderating team context variables; and relate self-leadership in teams to a set of differentiated member work role behaviors including proficiency, adaptivity, and proactivity. After a review of research on individual and team members' self-leadership, the underlying motivational processes of individual self-leadership in teams are examined. Building on these, moderating team context variables on the self-leadership (...) work role-performance relationship are proposed. A summarizing multilevel framework is presented which relates self-leadership in teams to a differentiated set of team member work role behaviors including proficiency, adaptiey, and proactivity. Additionally, motivational processes are proposed which mediate self -leadership-behavior relationships. Finally, research implications are discussed. The framework extends current theories by (1) examining individual self-leadership in teams, (2) using a comprehensive and differentiated set of team member work role performance, and (3) applying an individual-level model of motivation in teams to explain effects of self-leadership in teams. (shrink)

Background Recent publications reveal shortcomings in evidence review and summarization methods for patient decision aids. In the large-scale "Share to Care (S2C)" Shared Decision Making (SDM) project at the University Hospital Kiel, Germany, one of 4 SDM interventions was to develop up to 80 decision aids for patients. Best available evidence on the treatments' impact on patient-relevant outcomes was systematically appraised to feed this information into the decision aids. Aims of this paper were to (1) describe how PtDAs are developed (...) and how S2C evidence reviews for each PtDA are conducted, (2) appraise the quality of the best available evidence identified and (3) identify challenges associated with identified evidence. Methods The quality of the identified evidence was assessed based on GRADE quality criteria and categorized into high-, moderate-, low-, very low-quality evidence. Evidence appraisal was conducted across all outcomes assessed in an evidence review and for specific groups of outcomes, namely mortality, morbidity, quality of life, and treatment harms. Challenges in evidence interpretation and summarization resulting from the characteristics of decision aids and the type and quality of evidence are identified and discussed. Conclusions Evidence reviews in this project were carefully conducted and summarized. However, the evidence identified for our decision aids was indeed a "scattered landscape" and often poor quality. Facing a high prevalence of low-quality, non-directly comparative evidence for treatment alternatives doesn't mean it is not necessary to choose an evidence-based approach to inform patients. While there is an urgent need for high quality comparative trials, best available evidence nevertheless has to be appraised and transparently communicated to patients. (shrink)

In classical memory tasks, it is often necessary to distinguish between old and new stimuli. Recent studies also use tasks in which stimuli appear that are similar to, but not identical with, familiar stimuli, so-called lures. These tasks were designed to study two postulated sub-functions of memory: Pattern separation and pattern completion. The stimuli are usually pictures of everyday objects, but for which different prior knowledge may influence memory performance and the degree of similarity between two pictures cannot be determined (...) objectively. The Visual Sensory Memory Task (VSMT) developed by Kaernbach and colleagues is a visual pink noise-based task that can be used to construct lure stimuli with precisely quantifiable degrees of similarity. In this dissertation, existing test procedures and the newly developed test are first compared to investigate the validity of the VSMT. Then, the performance of the VSMT is transferred to different age groups to study the reliability of the VSMT, and finally, the neural processes in the hippocampus during memory retrieval are examined. The results of the first experiment demonstrate the validity of the VSMT as a neuropsychological measurement tool to study declarative memory. The second experiment showed that it is possible to perform the VSMT with different age groups and that the performance thereby shows the same profile in all age groups. In addition, it showed the expected better performance of young adults compared to four- to five-year-old children as well as adults over 65 years of age. The results of the third experiment confirm existing findings about the dentate gyrus as the central region of pattern separation and about the CA3 region as the core for the dynamic balance between pattern separation and pattern completion. Furthermore, they point to an involvement of the subiculum in pattern separation. (shrink)

This study aims to describe social network and social participation and to assess associations with depressive symptoms in older persons with increased risk for dementia in Germany. We conducted a cross-sectional observational study in primary care patients (aged 60-77) as part of a multicenter cluster-randomized controlled trial (AgeWell.de). We present descriptive and multivariate analyses for social networks (Lubben Social Network Scale and subscales) and social participation (item list of social activities) and analyze associations of these variables with depressive symptoms (Geriatric (...) Depression Scale). Of 1030 included patients, 17.2% were at risk for social isolation (Lubben Social Network Scale < 12). Looking at the subscales, a reduced non-family network was found almost twice as often as a reduced family network. Patients with depressive symptoms had significantly smaller social networks than patients without depression (p < 0.001). They rather engaged in social activities of low involvement level or no weekly social activity at all (p < 0.001). The study shows associations of depressive symptoms with a decreased social network and less social participation in elderly participants. Sufficient non-family contacts and weekly social activities seem to play an important role in mental health and should be encouraged in elderly primary care patients. (shrink)

The application of augmented reality (AR) is receiving great interest in e-commerce, m-commerce, and brick-and-mortar-retailing. A growing body of literature has explored several different facets of how consumers react to the upcoming augmented shopping reality. This systematic literature review summarizes the findings of 56 empirical papers that analyzed consumers’ experience with AR, acceptance of AR, and behavioral reactions to AR in various online and offline environments. The review synthesizes current knowledge and critically discusses the empirical studies conceptually and methodologically. Finally, (...) the review outlines the theoretical basis as well as the independent, mediating, moderating, and dependent variables analyzed in previous AR research. Based on this synthesis, the paper develops an integrative framework model, which helps derive directives for future research on augmented shopping reality. (shrink)

Background While there is increasing evidence for the relevance of psychosocial variables such as dental fear or psychological attachment in dentistry, much less is known about the mechanisms that determine the strength of those associations. One potential moderator is the occurrence of a comorbid chronic disease such as psoriasis, which is linked to relevant disease parameters such as periodontal inflammation. The aim of the study was to test a moderation model of the relationship between dental fear, psychological attachment and psoriasis (...) on periodontal health. Methods A total of 201 patients (100 with psoriasis, 101 without psoriasis) were included in a questionnaire-based, cross-sectional study. Dental status was measured with the Community Periodontal Index (CPI), dental fear was measured with the Hierarchical Anxiety Questionnaire (HAQ), and psychological attachment was measured with the Relationship Questionnaire (RQ). In addition to the examination of main effects, bootstrapping-based analyses were conducted to test the moderating influence of psychological attachment on the association between CPI and dental fear, gain moderated by group (with vs. without psoriasis). Results Controlling for several covariates, higher CPI scores were associated with higher levels of dental fear only in individuals without psoriasis under conditions of higher levels of psychological attachment anxiety and lower levels of attachment avoidance. Conclusion In individuals without psoriasis, psychological attachment can moderate the association between periodontal health and dental fear. This may provide a useful framework for reducing dental fear through interventions on the level of the dentist-patient relationship. (shrink)

Whether fixation selection in real-world scenes is guided by image salience or by objects has been a matter of scientific debate. To contrast the two views, we compared effects of location-based and object-based visual salience in young and older (65 + years) adults. Generalized linear mixed models were used to assess the unique contribution of salience to fixation selection in scenes. When analysing fixation guidance without recurrence to objects, visual salience predicted whether image patches were fixated or not. This effect (...) was reduced for the elderly, replicating an earlier finding. When using objects as the unit of analysis, we found that highly salient objects were more frequently selected for fixation than objects with low visual salience. Interestingly, this effect was larger for older adults. We also analysed where viewers fixate within objects, once they are selected. A preferred viewing location close to the centre of the object was found for both age groups. The results support the view that objects are important units of saccadic selection. Reconciling the salience view with the object view, we suggest that visual salience contributes to prioritization among objects. Moreover, the data point towards an increasing relevance of object-bound information with increasing age. (shrink)

REM sleep behavior disorder (RBD) is gaining increasing attention as important prodromal marker for the development of neurodegenerative disorders such as Parkinson's Disease. However, the clinical relevance of this disorder and its association with other prodromal markers is often underestimated in clinical routine. We here report a case of severe clinical complications following extensive nocturnal movements due to RBD, aggravated by occurrence of additional prodromal non-motor symptoms. This case stresses the importance of recognizing RBD as a multisystem disease by all (...) clinical disciplines. (shrink)

Self-control enables people to override momentary thoughts, emotions, or impulses in order to pursue long-term goals. Good self-control is a predictor for health, success, and subjective well-being, as bad self-control is for the opposite. Therefore, the question arises why evolution has not endowed us with perfect self-control. In this article, we draw some attention to the hidden benefits of self-control failure and present a new experimental paradigm that captures both costs and benefits of self-control failure. In an experiment, participants worked (...) on three consecutive tasks: 1) In a transcription task, we manipulated how much effortful self-control two groups of participants had to exert. 2) In a number-comparison task, participants of both groups were asked to compare numbers and ignore distracting neutral versus reward-related pictures. 3) After a pause for recreation, participants were confronted with an unannounced recognition task measuring whether they had incidentally encoded the distracting pictures during the previous number-comparison task. The results showed that participants who exerted a high amount of effortful self-control during the first task shifted their priorities and attention toward the distractors during the second self-control demanding task: The cost of self-control failure was reflected in worse performance in the number-comparison task. Moreover, the group which had exerted a high amount of self-control during the first task and showed self-control failure during the second task was better in the unannounced third task. The benefit of self-control failure during number comparison was reflected in better performance during the recognition task. However, costs and benefits were not specific for reward-related distractors but also occurred with neutral pictures. We propose that the hidden benefit of self-control failure lies in the exploration of distractors present during goal pursuit [...]. (shrink)

BackgroundThe EU’s 2006 Paediatric Regulation aims to support authorisation of medicine for children, thus effectively increasing paediatric research. It is ethically imperative to simultaneously establish procedures that protect children’s rights.MethodThis study endeavours (a) to evaluate whether a template consent form designed by the Standing Working Group of the German-Research-Ethics-Committees (AKEK) adequately informs adolescents about research participation, and (b) to investigate associated phenomena like therapeutic misconception and motives for research participation. In March 2016 a questionnaire study was conducted among 279 pupils (...) (mean age 13.1 years) of a secondary school in northern Germany.ResultsA majority of participants showed a general good understanding of foundational research ethics concepts as understood from the AKEK consent form. Nevertheless, our data also suggests possible susceptibility to therapeutic misconception. Own health concerns and pro-social considerations were found to be significant motivational factors for participating in research, while anticipation of pain lessens likelihood of participation. Advice from trusted others is an important decisional influence, too. Furthermore, data security was found to be a relevant aspect of adolescents’ decision-making process.ConclusionBearing in mind adolescents’ generally good understanding, we infer the lack of knowledge about medical research in general to be one source of therapeutic misconception. To further improve the quality of consent we propose a multi-staged approach whereby general research education is completed before an individual becomes a patient or potential participant. To the best of our knowledge this is the first German questionnaire-study addressing issues of informed consent in a large under-age sample. (shrink)

Methods Young healthy heterosexual couples underwent sleep-lab-based polysomnography of two sleeping arrangements: individual sleep and co-sleep. Individual and dyadic sleep parameters (i.e., synchronization of sleep stages) were collected. The latter were assessed using cross-recurrence quantification analysis. Additionally, subjective sleep quality, relationship characteristics, and chronotype were monitored. Data were analyzed comparing co-sleep vs. individual sleep. Interaction effects of the sleeping arrangement with gender, chronotype, or relationship characteristics were moreover tested. Results As compared to sleeping individually, co-sleeping was associated with about 10% (...) more REM sleep, less fragmented REM sleep (p = 0.008), longer undisturbed REM fragments (p = 0.0006), and more limb movements (p = 0.007). None of the other sleep stages was significantly altered. Social support interacted with sleeping arrangement in a way that individuals with suboptimal social support showed the biggest impact of the sleeping arrangement on REM sleep. Sleep architectures were more synchronized between partners during co-sleep (p = 0.005) even if wake phases were excluded (p = 0.022). Moreover, sleep architectures are significantly coupled across a lag of ± 5min. Depth of relationship represented an additional significant main effect regarding synchronization, reflecting a positive association between the two. Neither REM sleep nor synchronization was influenced by gender, chronotype, or other relationship characteristics. Conclusion Depending on the sleeping arrangement, couple's sleep architecture and synchronization show alterations that are modified by relationship characteristics. We discuss that these alterations could be part of a self-enhancing feedback loop of REM sleep and sociality and a mechanism through which sociality prevents mental illness. (shrink)

Suggestibility is a trait-dimension that has been differentiated into Yield and Shift dimensions. Yield refers to the susceptibility to suggestive item content in a first question series (Yield 1) and a second question series following negative feedback (Yield 2). Shift describes the tendency to change answers over the two series of questions depending on social pressure. This study aimed at investigating the psychometric properties and the factor structure of a German online version of the Gudjonsson Suggestibility Scale 1 (GSS 1) (...) and measurement invariance of suggestibility scores for gender and research institution. A total of N = 560 (n = 287 female; age: M = 24.20, SD = 4.60 years) students participated in the study. We present Stanine norms for the application of the online GSS 1. Results supported the theoretical basis of the GSS by revealing the two expected suggestibility factors: Yield and Shift. As expected, a leading factor and a non-leading factor were identified for Yield 1 and Yield 2 and a single factor for Shift. We report psychometric properties (e.g., item difficulty, part-whole corrected item-total correlations, reliability coefficients). We compare the factorial structure of the German online GSS 1 with former versions of the GSS 1. Our data suggest widely measurement invariance for gender and research institution on Yield 1 and Yield 2. (shrink)

Deception studies emphasize the important role of event-related potentials (ERPs) to uncover deceptive behavior based on underlying neuro-cognitive processes. The role of conflict monitoring as indicated by the frontal N2 component during truthful and deceptive responses was investigated in an adapted Concealed Information Test (CIT). Previously memorized pictures of faces should either be indicated as truthfully trustworthy, truthfully untrustworthy or trustworthy while concealing the actual untrustworthiness (untrustworthy-probe). Mean, baseline-to-peak and peak-to-peak amplitudes were calculated to examine the robustness of ERP findings (...) across varying quantification techniques. Data of 30 participants (15 female; age: M = 23.73 years, SD = 4.09) revealed longer response times and lower correct rates for deceptive compared to truthful trustworthy responses. The frontal N2 amplitude was more negative for untrustworthy-probe and truthful untrustworthy compared to truthful trustworthy stimuli when measured as mean or baseline-to-peak amplitude. Results suggest that deception evokes conflict monitoring and ERP quantifications are differentially sensitive to a-priori hypotheses. (shrink)

Research has shown that team reflection is a critical transition process for coordination processes and team performance, but our understanding of its dynamics and relationship to action processes and performance is incomplete. The goal of the present study was to examine the long-term change in reflection in teams over time and explore whether these changes are related to implicit and explicit coordination processes and performance improvement. Drawing on the recurring phase model of team processes and team reflexivity theory, we hypothesized (...) that team reflection is at least stable or increases over time for dissimilar tasks, that reflection trajectories are positively associated with implicit and negatively associated with explicit coordination in the later phases, and that implicit coordination mediates the relationship between team reflection and performance improvement. This model was tested in a three-wave longitudinal study (N = 175 teams) over a 2-months period. Results from growth curve modeling and structural equation modeling provided support for our hypotheses. (shrink)

Overeating behavior is supposedly a major contributing factor to weight gain and obesity. Binge eating disorder (BED) with reoccurring episodes of excessive overeating is strongly associated with obesity. Learning models of overeating behavior and BED assume that mere confrontation with food leads to a conditioned response that is experienced as food craving. Accordingly, individuals with obesity and BED were shown to have high trait food cravings. To date, little is known about differences in state food cravings and cue reactivity at (...) the sight of palatable food in individuals with obesity and BED compared to individuals with obesity without BED. Therefore, the aim of our study was to examine differences in cue-induced, state and trait food cravings in people with obesity with and without BED. We found that all aspects of food cravings were more prevalent in individuals with obesity and BED than in individuals without BED. By implementing a food cue reactivity paradigm, our results show that individuals with obesity with BED have more cue-induced cravings than individuals with obesity without BED. Moreover, these cue-induced cravings in individuals with obesity and BED were highest for high-fat and high-sugar foods as opposed to low-calorie foods. Thus, our results emphasize the role of increased cue reactivity and craving at the sight of palatable foods in individuals with obesity and BED. Hence, our findings support etiological models of conditioned binge eating and are in line with interventions targeting cue reactivity in BED. (shrink)

According to the stereotype content model, stereotypes can be described by using the dimensions competence and warmth. Compared to other professions, teaching is associated with a paternalistic stereotype consisting of high warmth and low competence. In four studies, stereotypes about different subgroups of pre-service teachers were compared. The aim was to understand sub-stereotypes better that could lead to different levels of stereotype threat and adverse behavioral tendencies. In Study 1 (N = 335), we compared stereotypes about elementary school pre-service teachers, (...) grammar school pre-service teachers, computer science students, law students, and psychology students reported by pre-service teachers and psychology students. In contrast to nonteaching students, both groups of pre-service teachers corresponded to the paternalistic stereotype. In Study 2 (N = 243), pre-service teachers reported stereotypes about pre-service teachers for elementary schools, special education schools, comprehensive schools, vocational schools, and grammar schools. Elementary school pre-service teachers were stereotyped most paternalistically, while grammar school pre-service teachers matched the paternalistic stereotype the least. The ratings of other school types mostly fell between these extremes. In Studies 3a (N = 133, open-ended questions) and 3b (N = 308, closed-ended questions), students of various study programs compared pre-service teachers majoring in German and history (representing a non-STEM major combination) to pre-service teachers with the majors mathematics and physics (representing a STEM major combination). Pre-service teachers studying German and history were rated warmer but less competent than pre-service teachers with the majors mathematics and physics, confirmed by both methods of measuring stereotypes. In Studies 1, 3a, and 3b, ingroup favoritism in the ratings by pre-service teacher participants was tested and only found for competence in Study 1. The importance of our results and their implications for stereotype threat effects and possible interventions are discussed. (shrink)

Most mental disorders originate in childhood, and once symptoms present, a variety of psychosocial and cognitive maladjustments may arise. Although early childhood problems are generally associated with later mental health impairments and psychopathology, pluripotent transdiagnostic trajectories may manifest. Possible predictors range from behavioral and neurobiological mechanisms, genetic predispositions, environmental and social factors, and psychopathological comorbidity. They may manifest in altered neurodevelopmental trajectories and need to be validated capitalizing on large-scale multi-modal epidemiological longitudinal cohorts. Moreover, clinical and etiological variability between patients (...) with the same disorders represents a major obstacle to develop effective treatments. Hence, in order to achieve stratification of patient samples opening the avenue of adapting and optimizing treatment for the individual, there is a need to integrate data from multi-dimensionally phenotyped clinical cohorts and cross-validate them with epidemiological cohort data. In the present review, we discuss these aspects in the context of externalizing and internalizing disorders summarizing the current state of knowledge, obstacles, and pitfalls. Although a large number of studies have already increased our understanding on neuropsychobiological mechanisms of mental disorders, it became also clear that this knowledge might only be the tip of the Eisberg and that a large proportion still remains unknown. We discuss prediction strategies and how the integration of different factors and methods may provide useful contributions to research and at the same time may inform prevention and intervention. (shrink)

Non-invasive transcranial electrical brain stimulation (tES) techniques, including transcranial direct current stimulation (tDCS), transcranial alternating current stimulation (tACS) and transcranial random noise stimulation (tRNS), can alter neuronal activity and related brain functions. However, tES effects seem to be modulated by various influencing factors, leading to high inter-individual variability in tES effects and often only low effect sizes, or even no effects. The present thesis therefore aimed to investigate methodological and physiological influencing factors of tDCS, tACS and tRNS that have not (...) been sufficiently examined so far. A first study investigated the influence of montage and individual functional performance level on the effects of anodal tDCS over the left dorsolateral prefrontal cortex (DLPFC) in healthy adults. Compared with sham stimulation, a multichannel montage led to stronger effects than a bipolar montage. For both montages the effects of stimulation were dependent on the functional performance level of participants. A second study investigated the effects of multichannel tDCS over the left DLPFC in healthy children and adolescents, considering the influence of concurrent target task performance during stimulation and individual head anatomy. tDCS did not influence the target outcome but led to transfer effects on non-target task performance and neurophysiological activity, that were only partly influenced by task performance during stimulation. The individual head anatomy had no influence on stimulation effects. A third study investigated tACS and tRNS effects on motor cortex excitability in healthy children and adolescents in comparison to adults. The individual response to sham stimulation was investigated as marker for the individual physiological brain state. Motor cortex excitability was not modulated by age but by individual response to sham stimulation. All studies provide important insights into the modulatory factors of stimulation effects. Based on these results, future studies should aim at individualising tES application. (shrink)

It should have become clear by now that the following discussion will be theoretical in perspective. Historical studies, like any other form of science, cannot be conducted without a theoretical framework. Sometimes, we are unaware of the distinctions we draw before we search for material, select and interpret it; some even think that we should just let the sources speak for themselves. Nevertheless, no material can speak for itself: it can only answer to questions we ask. And these questions we (...) ask are dependent on our present preconceptions of bygone societies and their historical development; as every hermeneutic endeavour, historical studies begins with a Vorurteil (prejudice). Many studies of the eighteenth-century public sphere have started out from those conceptions outlined by Habermas; as mentioned above, most of these studies found fault in Habermas's description of the eighteenth century and revealed his preconception as a prejudice. However, by exposing Habermas's approach as ideological, it seemed easy to claim a common-sense, bias-free position for oneself. I do not think such a position is possible: the hermeneutic Vorurteil can never be overcome entirely; it can only be adequately reflected and adjusted. Rather than claiming to work without all preconceptions, one should, I think, try to explicate one's theoretical framework as precisely as possible. If there really are too many findings that cannot be integrated into Habermas's model, one should look for a new model that might be better suited to give meaning to new historical evidence. It is such a new theoretical framework that I want to propose here. In order to do so, a meticulously detailed examination of Habermas's framework is necessary to find out which theoretical decisions led to the shortcomings of his approach. Following this re-examination, I will try to construct a new framework that avoids Habermas's shortcomings. Of course, this new theoretical framework will only be as good as the extent to which it is able to integrate historical evidence and extricate meaningful answers from these sources. Unfortunately, however, there is not enough space here to put the new framework to the test - that will have to be done elsewhere. (shrink)

Extensive research has demonstrated that rs1360780, a common single nucleotide polymorphism within the FKBP5 gene, interacts with early-life stress in predicting psychopathology. Previous results suggest that carriers of the TT genotype of rs1360780 who were exposed to child abuse show differences in structure and functional activation of emotion-processing brain areas belonging to the salience network. Extending these findings on intermediate phenotypes of psychopathology, we examined if the interaction between rs1360780 and child abuse predicts resting-state functional connectivity (rsFC) between the amygdala (...) and other areas of the salience network. We analyzed data of young European adults from the general population (N = 774; mean age = 18.76 years) who took part in the IMAGEN study. In the absence of main effects of genotype and abuse, a significant interaction effect was observed for rsFC between the right centromedial amygdala and right posterior insula (p <.025, FWE-corrected), which was driven by stronger rsFC in TT allele carriers with a history of abuse. Our results suggest that the TT genotype of rs1360780 may render individuals with a history of abuse more vulnerable to functional changes in communication between brain areas processing emotions and bodily sensations, which could underlie or increase the risk for psychopathology. (shrink)

Widowhood is common in old age, can be accompanied by serious health consequences and is often linked to substantial changes in social network. Little is known about the impact of social isolation on the development of depressive symptoms over time taking widowhood into account. We provide results from the follow-up 5 to follow-up 9 from the longitudinal study AgeCoDe and its follow-up study AgeQualiDe. Depression was measured with GDS-15 and social isolation was assessed using the Lubben Social Network Scale (LSNS-6). (...) The group was aligned of married and widowed people in old age and education through entropy balancing. Linear mixed models were used to examine the frequency of occurrence of depressive symptoms for widowed and married elderly people depending on the risk of social isolation. Our study shows that widowhood alone does not lead to an increased occurrence of depressive symptoms. However, "widowed oldest old", who are also at risk of social isolation, have significantly more depressive symptoms than those without risk. In the group of "married oldest old", women have significantly more depressive symptoms than men, but isolated and non-isolated do not differ. Especially for people who have lost a spouse, the social network changes significantly and increases the risk for social isolation. This represents a risk factor for the occurrence of depressive symptoms. (shrink)

This meta-analysis investigates the relationship between teleworkers’ personality traits and his/her performance. Drawing on Tett and Burnett’s (2003) trait activation theory and the Big Five model in personality theory (Costa & McCrae, 1992), this research also examines if social, organizational, and task characteristics moderate these associations. Ten studies with 23 effect sizes were included in a random-effects model. The results established significant small positive effect sizes for emotional stability and conscientiousness with teleworkers’ job performance and correspond with and expand prior (...) research. No significant negative relation between extraversion and teleworkers’ job performance was found which contradicts prior research. Task interdependence moderated the relation between emotional stability and conscientiousness with job performance. However, due to the low number of studies and their overall moderate study quality, this review can only draw preliminary conclusions. (shrink)

We propose that a zone of tolerance of fairness (ZOT) construct, which encompasses a boundary model, provides a deeper understanding of fairness processes. In two field experimental studies using scenario techniques, we manipulated fairness treatment in personnel selection settings and examined the role of a new ZOT measure in event fairness perceptions. Results from Study 1 (N = 222) demonstrated the psychometric properties of the ZOT measure, including reliability, and factorial and discriminant validity. We also found support for our hypothesis (...) that the ZOT measure is a stronger predictor of perceived event fairness than a mean entity fairness measure. Furthermore, results from Study 2 (N = 108) replicated most of those from Study 1. We also demonstrated that individuals’ fairness perception is not a uniform entity but consists of four latent classes, determined by different levels of height and width of the ZOT measure. Class membership was predictive of perceived event fairness when treated unfair. Taken together, our findings suggest that the ZOT measure represents a promising supplementary instrument to the traditional approach targeting applicants’ mean entity fairness. (shrink)

Based on the Dispersed Leadership Theory in Teams, we examined the simultaneous influence of three factors on team members’ attitudes and behavior: (1) interactional leadership carried out by leaders, (2) team leadership performed by team members, and (3) structural leadership exerted by work and organizational structures. Results from two policycapturing studies revealed that structural, interactional and team leadership simultaneously affect an individual’s behavior in terms of task behavior, task performance and commitment. Results also indicated that the need for dispersed leadership (...) was particularly high in situations with high task uncertainty and where the learning of new task behavior was required. Results from Study 2 further demonstrated the positive relationship between interactional leadership, team leadership, and structural leadership with team members’ task performance and commitment. Taken together, these findings provide evidence for the Dispersed Leadership Theory in Teams which showed a way to structure and extend future leadership research. (shrink)

Using an event‐triggered multi‐stage framework, this random‐effects meta‐analysis examined the changes in applicants' perceptions of fairness between consecutive stages and throughout the entire personnel selection process. We integrated findings of studies with at least two measurement points, resulting in 45 effect sizes (overall N = 3,038). Trajectories of perceptions of fairness decreased nonlinearly across the process, with a steeper decrease for people who held high levels of initial fairness expectations. Unjust treatment produced a decrease in perceptions of fairness from pretest (...) to posttest and an increase from posttest to postdecision. Furthermore, the length of the time interval moderated the changes in fairness perceptions between the posttest and postdecision stage. Practical implications and an agenda for future research are discussed. (shrink)

The subject of the present thesis is the phenomenon of simultaneous colour contrast: As is well known, the perceived colour of a given light stimulus depends almost as strongly on the stimulation of neighbouring regions of the visual field as on the local stimulus itself. Thus, the perceived colour of a target stimulus can be manipulated either by changing the colour co-ordinates of the target itself, or, alternatively, by changing the colour co-ordinates of the surround. Classical models of simultaneous contrast (...) are based on the implicit assumption that the changes in perceived colour brought about by these two kinds of manipulation are basically of the same kind, and thus may compensate each other. This ‘compensation assumption’ is equivalent to the widespread assumption that the space of perceived colours is three-dimensional. In principle, though, the well-established facts of trichromatic theory are compatible with a dimensionality of the space of perceived colours higher than three (namely three times the number of differently coloured regions in the visual field). One of the central results of the present investigations is that the compensation assumption seems to be unwarranted in the case of simple centre-surround stimuli. This instilled the expectation that classical methods for measuring simultaneous contrast effects, such as grey settings and asymmetric colour matching, may sometimes be inappropriate, and thus yield misleading results. In further experiments it is shown that this is indeed the case when uniformly coloured surrounds are used. In the case of variegated surrounds, however, matters appear to be much less complicated. This difference seems to be due to impressions of perceptual transparency being evoked by uniform surrounds, but not by variegated ones. (shrink)

In two experiments I examined what favorable conditions of early source monitoring performances are and what cognitive, social-cognitive and social factors are relevant to early source monitoring performances. Experiment 1 revealed that an action encoding mode is a favorable condition for 4- and 5-year-olds? external and reality monitoring performances but not for the 3-year-olds? source monitoring performances. Experiment 2 revealed that the familarity with the person source is a favorable condition for younger 3-, older 3-, 4- and 5-year old children. (...) The experiment also showed that multiple source attributions are possible at the middle of the third year of life and that the internal source monitoring instruction can be optimized for older but not for younger 3-year-old children. Both experiments revealed specific relations between the examined source monitoring performances and the selected working memory performances, verbal abilities, theory of mind abilities and social factors. (shrink)

Evolutionary theory provides the biological sciences, with a fundamental and powerful model to explain the emergence of cooperative behavior. A detailed explanation for the existence of cooperation between related individuals is provided by the theory of kin selection. However, one cannot explain examples of apparent altruism through kin selection, because in these cases unrelated individuals interact. In my dissertation I have tested empirically new models and predictions of how cooperation between unrelated humans can be established. This research is especially important (...) because we interact in a close net of relationships, where cooperation between unrelated individuals plays one of the main roles. Modern human societies are impossible to imagine without cooperation between unrelated individuals. By identifying the circumstances under which cooperation is stable between unrelated individuals, we would be provided with intellectual tools to positively influence the deciding factors by alternating the circumstances accordingly. (shrink)

Dynamic surface completion is a phenomenon of visual filling-in where a colored pattern perceptually spreads onto an area confined by virtual contours in a multi-aperture motion display. The spreading effect is qualitatively similar to static texture spreading but widely surpasses it in strength, making it particularly suited for quantitative studies of visual interpolation processes. I carried out six experiments to establish with objective tasks that homogeneous color, as well as non-uniform texture spreading is a genuine representation of surface qualities and (...) thus goes beyond mere contour interpolation. The experiments also serve to relate the phenomena to ongoing discussions about potentially responsible mechanisms for spatiotemporal integration: With a phenomenological method, I examined to what extent simple sensory persistence might be causally involved in the effect under consideration. The findings are partially consistent with the idea of sensory persistence, and indicate that information fragments are integrated over a time window of about 100 to 150 ms to form a complete surface representation. (shrink)

Why do we sleep? Loosing consciousness makes us completely vulnerable to any dangers of the environment for a third of our life time and must therefore yield a critical evolutionary advantage. A likely core function of sleep is the regulation of neuronal plasticity. The absence of interfering conscious information processing sets the stage for the basic maintenance of synaptic homeostasis to the complex reorganization and consolidation of memories. However, the underlying neuronal mechanisms subserving these processes are still largely unknown. The (...) aim of this thesis is to further elucidate the essential role of sleep-specific neuronal oscillations in brain plasticity. In a multimodal neuroscientific approach, non-invasive imaging methods (EEG and fMRI) and brain stimulation techniques (TMS and tDCS) are combined in a series of empirical studies to investigate how slow oscillations and sleep spindles are influenced by and in turn mediate plastic changes in the sleeping brain. (shrink)

This thesis investigates the representation of phonological language aspects in the healthy human brain, especially the contribution of the right hemisphere. Using functional magnetic resonance imaging (fMRI) and transcranial magnetic stimulation (TMS), it is demonstrated that the left and right supramarginal gyri are essential for phonological processing. It is also shown that the left as well as the right posterior inferior frontal gyri contribute to efficient phonological decisions. Finally, an fMRI study reveals a frontal network for phonological aspects of language (...) production. These results demonstrate a contribution of both hemispheres to efficient phonological aspects of language comprehension as well as production. Together, these results question the notion of a left-dominant network of brain regions for language processing. (shrink)

Approaches from clinical psychology and psychiatry have proposed integrative models to explain antisocial behavior. These models assume that a coherent explanation for antisocial behavior requires the consideration of multiple relevant influences like genetic predispositions, psychological factors and psychosocial influences. With respect to the psychological factors it has been suggested that a person’s personality constitution may be associated with a heightened tendency to antisocial and criminal behavior, like it has been shown consistently for the psychopathic personality. The actual manifestation of the (...) behavior deviance however will depend on the influence of other (personality) risk factors. Recent theoretical models on antisocial and criminal behavior have sought to identify these sources and to integrate the influences of relevant factors. The studies presented in this work are specifically concerned with the investigation of the psychopathic personality and its relatedness to other personality risk factors (e.g. mental disorders, intelligence, emotion regulation) in the prison population. Three studies will be presented that are based on the idea that the presence of correlative relationships between risk variables imply a heightened the risk for antisocial and criminal behavior. (shrink)

Today, all important educational achievement studies, particularly large scale assessments, use item response theory (IRT) as the standard method for their analyses. An important and very basic assumption of IRT is on the given dimensionality of a test: In order to be interpreted unidimensional a test has to be unidimensional and hence cannot be interpreted multidimensional. In reality though, this basic assumption is very often neglected. The Programme for International Student Assessment (PISA), for example, applies a unidimensional IRT-Model for the (...) analysis of the mathematics achievement and at the same time applies a multidimensional IRT-model for the analysis of the subscales Change and Relationships, Quantity, Space and Shape, and Uncertainty and Data. This contradiction to one of the basic assumptions of IRT is also included in other well known large scale assessments. Strangely enough, non of these studies discuss the issue. This work discusses the advantage and disadvantages of the currently used approaches for a concurrent uni- and multidimensional analysis, and a new approach is presented, which bases on an IRT model, the generalized subdimension model (GSM), which allows the calculation of a weighted mean score within the IRT framework. Besides the demonstration of different applications for the GSM and its predecessor, the subdimension model, the model’s characteristics are compared to those of other models, such as hierarchical models. Beyond the comparison of the model fit, that is, the reliability of the results, the discussion particularly focuses on the difference in the interpretation, that is, on the validity of the results. (shrink)

Gathering information in human interactions is a critical aspect for police and intelligence interviewers. However, quite recently and rather slowly researchers have started to focus on using available information in order to collect case-related information in such interactions. This thesis advances this line of research by conducting three studies on how to use available information to elicit new information from sources and suspects. Two of the studies were about the Scharff-technique and one was about the Strategic Use of Evidence (SUE)-technique. (...) Overall, the Scharff-technique (vs. the Direct Approach) and the SUE-technique (vs. the Early disclosure) resulted in more new information by influencing the sources’/suspects’ perceptions of the interviewer’s knowledge strategically. In line with the three studies, this thesis developed an interviewing framework consisting of a conceptual and tactical tier. The conceptual tier explains the cognitive and verbal processes of the sources/suspects in interviews and the mechanisms behind the Scharff and SUE tactics. The tactical tier includes the Scharff-technique and SUE-technique and shows ways in order to influence the sources’/suspects’ perceptions and verbal behaviours. Overall, the developed two-tier interviewing framework can help to train practitioners and initiate further research. (shrink)

A growing number of studies have investigated the role of team reflexivity, that is the extent to which teams reflect upon and adapt their functioning. However, in spite the relevance of the concept, previous research revealed surprisingly heterogenous findings regarding the relationship between team reflexivity and outcomes. The main goals of this work were therefore to theoretically and empirically identify causes for this unclarity and develop alternative conceptualisations. As a first step, team reflexivity was conceptualized in the form of a (...) framework that integrates four interacting but distinct reflexive processes. Focusing on the team reflection process, an extended multidimensional reflection measure REMINT (Reflection Measure for Individuals and Teams) was developed and validated. The measure allows to capture the relevant dimensions of quality and quantity of reflection and the underlying processes of information seeking and information evaluation, and offers a precise and at the same time economical examination of the team reflection process. Based on this differentiation, the results of two extensive consecutive studies revealed that is necessary to distinguish between the different forms of team reflection in order to understand the effects of team reflection on outcomes. Furthermore, results showed that this relationship is also depended on various contextual variables, such as previous team performance (feedback), time, or environmental conditions. Theoretical and practical implications are discussed. (shrink)

This doctoral thesis focuses on the perceived fairness of web-based selection proce-dures. Fairness in this respect is analyzed from an applicant’s perspective utilizing the frame-work of Organizational Justice Theory. Organizational Justice evaluates organizational behav-ior from the affected individual’s point of view. Gilliland (1993) applied this theory to per-sonnel selection proposing ten rules of procedural justice which make up a fair selection pro-cedure – from an applicant’s point of view. The first decade of the new millennium saw the rise of the (...) internet as a medium for personnel recruitment and selection. Compared to conventional selection methods web-based selection comprises several contingencies like the lack of personal contact, the high degree of standardization, or the transmission of highly confidential data across the data networks. Therefore, web-based selection and recruitment poses a brand new field of research. This thesis examines the fairness of web-based personnel selection procedures using Gilliland’s (1993) model of applicants’ reactions. Research into the fairness of selection is summarized and discussed, focusing especial-ly on studies into the fairness of web-based selection procedures. Based on current research findings propositions for future research are made and partly put into practice. In a field study with 354 applicants for an apprenticeship program a web-based selec-tion procedure is evaluated using Gilliland’s (1993) model of applicants’ reactions. Results of Partial Least Squares analysis show that treatment of the applicants, opportunity to perform, reconsideration opportunity, and propriety of questions emerge as the most relevant procedur-al justice rules. In a laboratory study surveying a sample of 91 students design and content of a web-based selection form are modified systematically abiding or violating Gilliland’s (1993) pro-cedural justice rules. It is shown that these changes influence participants’ behavioral inten-tions (e.g. pursuit intentions) and that this influence is mediated by the perceived fairness of the selection procedure as postulated in Gilliland’s model of applicants’ reactions. The impact of these findings for research and practice is discussed. (shrink)

A positive teacher-student relationship that is characterized by mutual trust, warmth, and teacher support (= proximity) as well as clear limits for student behavior (= influence) is considered central for students’ cognitive and psychosocial development and this assumption has widely been supported empirically. However, these studies largely focused on domain-specific student outcomes such as achievement or interest in particular subjects and less so on general aspects of school adjustment such as school satisfaction or self-esteem. At the same time, the teacher-student (...) relationship can also be considered vital for teachers: Teachers who perceive difficulties in controlling student behavior report reduced occupational well-being. In addition, the teachers’ need to feel appreciated and liked by students is increasingly emphasized as an important resource for their occupational well-being. However, this assumption has not been investigated sufficiently. Therefore, the present work addressed the question of whether the teacher-student relationship in terms of proximity and influence is associated with students’ general school adjustment and teachers’ occupational well-being. Results from study 1 revealed that teacher proximity and influence were associated with students’ general school adjustment in terms of achievement, school satisfaction, truancy, and self-esteem. Study 2 showed that teachers who perceived difficulties in controlling student behavior and who felt unappreciated by students reported lower work enthusiasm and higher emotional exhaustion. In Study 3, teachers who felt related with their students reported higher work enthusiasm, whereas no association with their emotional exhaustion was found. The present work underlined the importance of the teacher-student relationship for both students’ school adjustment and teachers’ occupational well-being. (shrink)

Despite the relative stability of personality, multiple studies were able to show that personality develops across the whole life span with unique developmental patterns occurring in the time of emerging adulthood. Rank-order consistency has been shown to increase substantially, mean-level changes in the direction of the maturity principle (i.e., increases in emotional stability, agreeableness, and conscientiousness) have been repeatedly demonstrated, and interindividual differences in change were shown to be most pronounced. Aiming to explain these findings, social relationships and work haven (...) been shown to be important environmental contexts for personality development. However, some questions have remained open. First, little has been understood about the personality development of emerging adults undergoing a different educational pathway than college education. Therefore, study 1 investigated personality development in emerging adults undergoing 3-year vocational education and training. The study showed the young apprentices to develop counter the maturity principle. Second, innovative theoretical and methodological approaches to more adequately model dynamic transactionism theory in personality-social relationship transactions have been suggested to overcome the imbalance of effects. Thus, study 2 investigated personality-relationship transactions in a major life transition from high school to post-secondary education and beyond. However, the dominance of personality effects on subsequent social relationship development was reinforced for emerging adulthood. Third, following the ongoing debate on possibilities to psychologically assess environmental contexts, study 3 tested multiple hypotheses on the interplay between the importance ascribed to basic psychological need support (BPN), perceived BPN support, and personality development. The findings revealed the individual’s importance ascribed to BPN to primarily important for personality development. (shrink)

Multilevel models are one of the most frequently used methods for analyzing multilevel data. These types of data occur when observations (Level 1) are clustered within higher-level collectives (Level 2), for example, students nested in schools or employees nested in work teams. Unfortunately, multilevel data often contain missing data, for example, when participants omit certain items in a questionnaire or they drop out before the end of a study. If treated improperly, missing data can distort parameter estimates and compromise statistical (...) decision making. For this reason, it is often recommended to use principled methods for dealing with missing data such as multiple imputation (MI) or maximum likelihood estimation (ML). In the present dissertation, I consider the treatment of missing data with an emphasis on multilevel MI. In multilevel research, it is important that the imputation model takes the multilevel structure into account. However, many open questions remain about how this can be achieved in practice. In multiple studies, I considered different implementations of multilevel MI and examined how missing data can be treated in multilevel models with random intercepts, random slopes, interaction effects, continuous and categorical data, and missing data at Level 2. In addition, I considered the analysis of multiply imputed data sets and examined different procedures for pooling the results of multiparameter tests (e.g., model comparisons), including applications in the analysis of variance (ANOVA) and multilevel models with tests about fixed effects and variance components. Finally, I present the R package mitml, which provides a set of practical tools for conducting multilevel MI. This includes tools for the specification of the imputation model, convergence diagnostics, analyzing multiply imputed data sets, and various pooling methods along with a tutorial article that illustrates its features and provides a nontechnical introduction to multilevel MI. (shrink)

Previous research has shown that ruminative thoughts are associated with impairments in well-being. However, the direction of this relationship is unclear. There are findings indicating both unidirectional and bidirectional (i.e., reciprocal) relationships. The question therefore arises how rumination and well-being are related. Furthermore, previous findings on the relationship between rumination and problem solving are heterogeneous. However, since ruminative thinking involves an increased use of resources to solve a problem, it is assumed that these resources (i.e., attention and effort) can positively (...) mediate the relationship between rumination and problem solving. On the other hand, it is also assumed that the negative effects of rumination on well-being negatively mediate the relation between rumination and problem solving. In Study 1 and 2 of the present dissertation, therefore, the relationship between rumination, well-being, resources (i.e., attention and effort), and problem solving was examined in a longitudinal way. The assumption that rumination also has a functional side is further supported by the hypothesis that ruminative thoughts can also lead to more constructive and deliberative thoughts about a problem, which in turn can foster the positive reappraisal of an event and ultimately personal growth. Study 3 of the present dissertation therefore examined to what extent ruminative thoughts can also lead to more constructive coping strategies. Furthermore, it was analysed to what extent the appraisal of an event as threatening and uncontrollable can cause the occurrence of ruminative thoughts. In summary, this work focuses on the functional and dysfunctional aspects of ruminative thoughts related to human well-being and problem solving. (shrink)

In this dissertation, I pursued two overarching goals. First, in two empirical studies, I demonstrated the advantages of analyzing interest stability and person-environment congruence of trainees in vocational education and training as well as interest similarity within families on the level of interest profiles. I was able to show that both interest profiles and P-E congruence are relatively stable over time and that family members have significantly similar interest profiles over and above gender-normativeness. Second, I conducted two validation studies of (...) a new instrument to assess vocational interests in the sense of the spherical model of vocational interests-a logical extension of the RIASEC model-which uses a more differentiated categorization of the circumplex and introduces a third dimension (Prestige): the Personal Globe Inventory (PGI) and its associated short version (PGI-S). In sum, I found evidence for the instruments' structural, convergent, and criterion based validity, the equivalence of these validity markers across versions, but also some crucial differences between PGI and PGI-S that primarily concern the Prestige dimension. Taken together, this thesis demonstrates challenges, advantages, and potential solutions of a profile-centered perspective on vocational interest research. I was able to shed some new light on central applied questions about vocational interest development in adolescence and presented a new instrument for German interest researchers that makes it possible to reliably and validly assess more elaborate vocational interest profiles. (shrink)

High demands on cognitive functions in daily life call for an efficient memory system that reduces interference between memories and enables generalizations across similar events. By means of pattern separation, similar memories are stored as distinct, non-overlapping representations, whereas during pattern completion, previously stored memories are reactivated by partial environmental cues. These two functions are critically reliant on the hippocampus. Evidence from computational models, studies in rodents, as well as human data support the idea that pattern separation and completion are (...) mediated by the hippocampal dentate gyrus and CA3 regions. However, studies in humans lack information regarding mechanistic aspects of causality regarding the anatomical structures of the hippocampus and pattern separation and completion processes. The aim of this thesis was to elucidate the role of the human hippocampus and its subfield-specific contributions to pattern separation. We examined natural lesion models, by means of selective CA1 lesions during a transient global amnesia, and in a rare form of limbic encephalitis, where neurodegeneration preferentially shows in the dentate gyrus and CA3. The results showed that pattern separation measured by a mnemonic similarity task was best predicted by the volume of the dentate gyrus, whereas recognition memory was stronger associated with the volume of CA1. We also found a strong deficit in pattern separation associated with selective CA1 lesions. We then examined pattern separation performance after post-encoding sleep in healthy humans to clarify the neurobiological processes of memory consolidation. We demonstrated the relevance of hippocampal information processing during sleep in the stabilization of separated information. This might also suggest a link between pattern separation and completion processes during sleep-dependent memory consolidation. (shrink)

This study examines how different evidence disclosure modes affect the elicitation of new critical information. Two modes derived from the Strategic Use of Evidence (SUE) framework were compared against an early disclosure mode (i.e., the evidence was disclosed at the outset of the interview). Participants (N = 88) performed a mock crime consisting of several actions before they were interviewed as suspects. In both SUE conditions the interviewer elicited and disclosed statement-evidence inconsistencies in two phases after an introductory phase. For (...) the SUE-Confrontation (SUE-C) condition, the interview was introduced in a business-like manner, and the interviewer confronted the suspects with the in/consistencies without giving them a chance to comment on these. For the SUE-Introduce-Present-Respond (SUE-IPR) condition, the interviewer introduced the interview in a non-guilt-presumptive way, presented the in/consistencies and allowed the suspects to comment on these, and then responded to their comments; at all times in a non-judgmental manner. Both SUE conditions generated comparatively more statement-evidence inconsistencies. The SUE-IPR condition resulted in more new critical information about the phase of the crime for which the interviewer lacked information, compared to the Early disclosure condition. A likely explanation for this was that (for the SUE-IPR condition) the interviewer used the inconsistencies to create a fostering interview atmosphere and made the suspects overestimate the interviewer's knowledge about the critical phase of the crime. In essence, this study shows that in order to win the game (i.e., obtaining new critical information), the interviewer needs to keep the suspect in the game (i.e., by not being too confrontational and judgmental). (shrink)

Reading comprehension at sentence level is a core component in the students’ comprehension development, but there is a lack of comprehension assessments at the sentence level, which respect the theory of reading comprehension. In this article, a new web-based sentence-comprehension assessment for German primary school students is developed and evaluated using a curriculum-based measurement (CBM) framework. The test focuses on sentence level reading comprehension as an intermediary between word and text comprehension. The construction builds upon the theory of reading comprehension (...) using CBM-Maze techniques. It is consistent on all tasks and contains different syntactic and semantic structures within the items. This paper presents the test development, a description of the item performance, an analysis of its factor structure, and tests of measurement invariance, and group comparisons (i.e., across gender, immigration background, over two measurement points, and the presence of special educational needs; SEN). Third grade students (n = 761) with and without SEN finished two CBM tests over 3 weeks. Results reveal that items had good technical adequacy, the constructed test is unidimensional, and it is valid for students both with and without SEN. Similarly, it is valid for both sexes, and results are valid across both measurement points. We discuss our method for creating a unidimensional test based on multiple item difficulties and make recommendations for future test construction. (shrink)

This paper studies performance predictions in the 7-item Cognitive Reflection Test (CRT) and whether they differ by gender. After participants completed the CRT, they predicted their own (i), the other participants' (ii), men's (iii), and women's (iv) number of correct answers. In keeping with existing literature, men scored higher on the CRT than women and both men and women were too optimistic about their own performance. When we compare gender-specific predictions, we observe that men think they perform significantly better than (...) other men and do so significantly more than women. The equality between women's predictions about their own performance and their female peers cannot be rejected. Our findings contribute to the growing literature on the underpinnings of behavior in economics and in psychology by uncovering gender differences in confidence about one's ability relative to same and opposite sex peers. (shrink)

In their innovative study, Inzlicht and Al-Khindi (2012) demonstrated that participants who were allowed to misattribute their arousal and negative affect induced by errors to a placebo beverage had a reduced error-related negativity (ERN/Ne) compared to controls not being allowed to misattribute their arousal following errors. These results contribute to the ongoing debate that affect and motivation are interwoven with the cognitive processing of errors. Evidence that the misattribution of negative affect modulates the ERN/Ne is essential for understanding the mechanisms (...) behind ERN/Ne. Therefore, and because of the growing debate on reproducibility of empirical findings, we aimed at replicating the misattribution effects on the ERN/Ne in a go/nogo task. Students were randomly assigned to a misattribution group (n = 48) or a control group (n = 51). Participants of the misattribution group consumed a beverage said to have side effects that would increase their physiological arousal, so that they could misattribute the negative affect induced by errors to the beverage. Participants of the control group correctly believed that the beverage had no side effects. As Inzlicht and Al-Khindi (2012), we did not observe performance differences between both groups. However, ERN/Ne differences between misattribution and control group could not be replicated, although the statistical power of the replication study was high. Evidence regarding the replication of performance and the non-replication of ERN/Ne findings was confirmed by Bayesian statistics. (shrink)

Similar to patients with Major depressive disorder (MDD), healthy subjects at risk for depression show hyperactivation of the amygdala as a response to negative emotional expressions. The medial prefrontal cortex is responsible for amygdala control. Analyzing a large cohort of healthy subjects, we aimed to delineate malfunction in amygdala regulation by the medial prefrontal cortex in subjects at increased risk for depression, i.e., with a family history of affective disorders or a personal history of childhood maltreatment. We included a total (...) of 342 healthy subjects from the FOR2107 cohort (www.for2107.de). An emotional face-matching task was used to identify the medial prefrontal cortex and right amygdala. Dynamic Causal Modeling (DCM) was conducted and neural coupling parameters were obtained for healthy controls with and without particular risk factors for depression. We assigned a genetic risk if subjects had a first-degree relative with an affective disorder and an environmental risk if subjects experienced childhood maltreatment. We then compared amygdala inhibition during emotion processing between groups. Amygdala inhibition by the medial prefrontal cortex was present in subjects without those two risk factors, as indicated by negative model parameter estimates. Having a genetic risk (i.e., a family history) did not result in changes in amygdala inhibition compared to no risk subjects. In contrast, childhood maltreatment as environmental risk has led to a significant reduction of amygdala inhibition by the medial prefrontal cortex. We propose a mechanistic explanation for the amygdala hyperactivity in subjects with particular risk for depression, in particular childhood maltreatment, caused by a malfunctioned amygdala downregulation via the medial prefrontal cortex. As childhood maltreatment is a major environmental risk factor for depression, we emphasize the importance of this potential early biomarker. (shrink)

Objectives:Social isolation is increasing in aging societies and several studies have shown a relation with worse cognition in old age. However, less is known about the association in the oldest-old (85+); the group that is at highest risk for both social isolation and dementia. Methods:Analyses were based on follow-up 5 to 9 of the longitudinal German study on aging, cognition, and dementia in primary care patients (AgeCoDe) and the study on needs, health service use, costs, and health-related quality of life (...) in a large sample of oldest-old primary care patients (AgeQualiDe), a multi-center population-based prospective cohort study. Measurements included the Lubben Social Network Scale (LSNS-6), with a score below 12 indicating social isolation, as well as the Mini-Mental Status Examination (MMSE) as an indicator of cognitive function. Results:Dementia-free study participants (n = 942) were M = 86.4 (SD = 3.0) years old at observation onset, 68.2% were women. One third (32.3%) of them were socially isolated. Adjusted linear hybrid mixed effects models revealed significantly lower cognitive function in individuals with smaller social networks (β = 0.5, 95% CI = 0.3-0.7, p <.001). Moreover, changes in an individual's social network size were significantly associated with cognitive changes over time (β = 0.2, 95% CI = 0.1-0.4, p =.003), indicating worse cognitive function with shrinking social networks. Conclusion:Social isolation is highly prevalent among oldest-old individuals, being a risk factor for decreases in cognitive function. Consequently, it is important to maintain a socially active lifestyle into very old age. Likewise, this calls for effective ways to prevent social isolation. (shrink)

Twenty years ago, the first report on the sound-induced double flash illusion, a visual illusion induced by sound, was published. In this paradigm, participants are presented with different numbers of auditory and visual stimuli. In case of an incongruent number of auditory and visual stimuli, the influence of auditory information on visual perception can lead to the perception of the illusion. Thus, combining two auditory stimuli with one visual stimulus can induce the perception of two visual stimuli, the so-called fission (...) illusion. Alternatively, combining one auditory stimulus with two visual stimuli can induce the perception of one visual stimulus, the so-called fusion illusion. Overall, current research shows that the illusion is a reliable indicator of multisensory integration. It has also been replicated using different stimulus combinations, such as visual and tactile stimuli. Importantly, the robustness of the illusion allows the widespread use for assessing multisensory integration across different groups of healthy participants and clinical populations and in various task setting. This review will give an overview of the experimental evidence supporting the illusion, the current state of research concerning the influence of cognitive processes on the illusion, the neural mechanisms underlying the illusion, and future research directions. Moreover, an exemplary experimental setup will be described with different options to examine perception, alongside code to test and replicate the illusion online or in the laboratory. (shrink)