Growing evidence suggests that natural environments – whether in outdoor or indoor settings – foster psychological health and physiological relaxation, indicated by increased wellbeing, reduced stress levels, and increased parasympathetic activity. Greater insight into differential psychological aspects modulating psychophysiological responses to nature-based relaxation videos could help understand modes of action and develop personalized relaxation interventions. We investigated heart rate variability as an indicator of autonomic regulation, specifically parasympathetic activity, in response to a 10-min video intervention in two consecutive studies as (...) well as heart rate. We hypothesized that a nature-based relaxation video elicits HRV increase and HR decrease, with response magnitude being affected by aspects of early life adversity and trait mindfulness. In Study 1, N = 60 participants watched a relaxation video intervention depicting different natural scenery. We analyzed changes in HR and respiratory sinus arrhythmia as a standard HRV measure, both based on 3-min segments from the experimental session, in multiple growth curve models. We found a decrease in HR and increase of RSA during the video intervention. Higher paternal care and lower trait mindfulness observing skills were associated with higher RSA values before but not during video exposure. In Study 2, N = 90 participants were assigned to three video conditions: natural scenery from Study 1, meditation video, or short clip from “The Lord of the Rings.” Again, HR decreased, and RSA increased during video segments, yet without expected group differences across different video types. We found higher parental care and lower parental overprotection to predict higher RSA at different times during the experiment. Interestingly, lower paternal overprotection predicted overall higher RSA. These results suggest a generic relaxation effect of video interventions on autonomic regulation that we discuss in light of different theories mapping restorative effects of natural environments. Further, psychological characteristics like aspects of early life adversity and trait mindfulness could contribute to individual differences in autonomic regulation. This study contributes to a better understanding of autonomic and psychological responses to relaxation videos. (shrink)

Individuals who are more easily disgusted tend to be more politically conservative. Individuals who have a preference for order also tend to be more politically conservative. In the present researc...

Working memory is the system responsible for maintaining and manipulating information, in the face of ongoing distraction. In turn, WM span is perceived to be an individual-differences construct reflecting the limited capacity of this system. Recently, however, there has been some evidence to suggest that WM capacity can increase through training, raising the possibility that training can functionally alter the neural structures supporting WM. To address the hypothesis that the neural substrates underlying WM are targeted by training, we conducted a (...) meta-analysis of functional magnetic resonance imaging studies of WM training using Activation Likelihood Estimation. Our results demonstrate that WM training is associated exclusively with decreases in blood oxygenation level-dependent responses in clusters within the fronto-parietal system that underlie WM, including the bilateral inferior parietal lobule, middle and superior frontal gyri, and medial frontal gyrus bordering on the cingulate gyrus. We discuss the various psychological and physiological mechanisms that could be responsible for the observed reductions in the BOLD signal in relation to WM training, and consider their implications for the construct of WM span as a limited resource. (shrink)

We conceptualise CSR communication as a process of reciprocal influence between organisations and their audiences. We use an illustrative case study in the form of a conflict between firms and a powerful stakeholder which is played out in a series of 20 press releases over a 2-month period to develop a framework of analysis based on insights from linguistics. It focuses on three aspects of dialogism, namely (i) turn-taking (co-operating in a conversation by responding to the other party), (ii) inter-party (...) moves (the nature and type of interaction characterising a turn, i.e. denial, apology or excuse) and (iii) intertextuality (the intensity and quality of verbal interaction between the parties). We address the question: What is the nature and type of verbal interactions between the parties? First we examine (a) whether the parties verbally interact and then (b) whether the parties listen to each other. We find evidence of dialogism suggesting that CSR communication is an interactive process which has to be understood as a function of the power relations between a firm and a specific stakeholder. Also, we find evidence of intertextuality in press releases by six firms which engage in verbal interaction with the stakeholder. We interpret this as linguistic evidence of isomorphic processes relating to CSR practices resulting from the pressure exerted by a powerful stakeholder. The lack of response by ten firms that fail to issue press releases suggests a strategy of ‘watch-and-wait’ with respect to the outcome of the conflict. (shrink)

Apparently objective and value-free `scientific' assessments of health risks are often highly value-laden and incorporate contentious social assumptions. Mr Wynne exposes some of the complexities underlying attempts to compare the health risks of nuclear and other sources of energy.

Background In Canadian jurisdictions without specific legislation pertaining to research consent, the onus is placed on researchers to determine whether a child is capable of independently consenting to participate in a research study. Little, however, is known about how child health researchers are approaching consent and capacity assessment in practice. The aim of this study was to explore and describe researchers' current practices. Methods The study used a qualitative descriptive design consisting of 14 face-to-face interviews with child health researchers and (...) research assistants in Southern Ontario. Transcribed interviews were analysed for common themes. Results Procedures for assessing capacity varied considerably from the use of age cutoffs to in-depth engagement with each child. Three key issues emerged from the accounts: (1) requirements that consent be provided by a single person thwarted researchers' abilities to support family decision-making; (2) little practical distinction was made between assessing if a child was capable, versus determining if study information had been adequately explained by the researcher; and (3) participants' perceived that review boards' requirements may conflict with what they considered ethical consent practices. Conclusion The results suggest that researchers' consent and capacity knowledge and skills vary considerably. Perceived discrepancies between ethical practice and ethics boards' requirements suggest the need for dialogue, education and possibly ethics board reforms. Furthermore we propose, where appropriate, a ‘family decision-making’ model that allows parents and their children to consent together, thereby shifting the focus from separate assent and consent procedures to approaches that appropriately engage the child and family. (shrink)

This paper presents the results of optical interferometry experiments in which the phase of photons in one arm of a Mach-Zehnder interferometer is modified by applying a transverse constriction. An equivalent quantum interferometry experiment using neutron de Broglie waves is discussed in which the observed phase shift is in the spirit of the force-free phase shift of the Aharonov-Bohm effects. In the optical experiments the experimental results are in excellent agreement with predictions.

The operational definition of a weak value for a quantum mechanical system involves the limit of the weak measurement strength tending to zero. I study how this limit compares to the situation for the undisturbed system. Under certain conditions, which I investigate, this limit is discontinuous in the sense that it does not merge smoothly to the Hilbert space description of the undisturbed system. Hence, in these discontinuous cases, the weak value does not represent the undisturbed system. As a result, (...) conclusions drawn from such weak values regarding the properties of the studied system cannot be upheld. Examples are given. (shrink)

Even after multiple cycles of ABET accreditation, many engineering programs are unsure of how much curriculum content is needed to meet the requirements of ABET’s Criterion 3.f (an understanding of professional and ethical responsibility). This study represents the first scholarly attempt to assess the impact of curriculum reform following the introduction of ABET Criterion 3.f. This study sought to determine how much professional and ethical responsibility curriculum content was used between 1995 and 2005, as well as how, when, why, and (...) to what effect changes in the amount of content occurred. Subsequently, the study sought to evaluate if different amounts of curriculum content generated differing student outcomes. The amount of curriculum content used by each of the participating programs was identified during semi-structured interviews with program administrators and a review of ABET Self-Study documents. Quantitative methods were applied to determine if a relationship existed between the curriculum content and performance on a nationally administered, engineering-specific standardized examination. The findings indicate a statistical relationship, but a lack of structure between the amount of required content in the curriculum and performance on the examination. Additional findings were also generated regarding the way that programs interpret the Criterion 3.f feedback generated during accreditation visits. The primary impact of this study is that it dispels the myth that more courses or course time on professionalism and ethics will necessarily lead to positive engineering education outcomes. Much of the impetus to add more curriculum content results from a lack of conclusive feedback during ABET accreditation visits. (shrink)

Medical technologies and assistive devices such as ventilators and power wheelchairs are designed to sustain life and/or improve functionality but they can also contribute to stigmatization and social exclusion. In this paper, drawing from a study of ten men with Duchenne muscular dystrophy, we explore the complex social processes that mediate the lives of persons who are dependent on multiple medical and assistive technologies. In doing so we consider the embodied and emplaced nature of disability and how life is lived (...) through bodies coupled with technologies and experienced as 'techno-body-subjects in situ'. Normative implications for theory and research, including bioethics research, are discussed. (shrink)

Medical technologies and assistive devices such as ventilators and power wheelchairs are designed to sustain life and/or improve functionality but they can also contribute to stigmatization and social exclusion. In this paper, drawing from a study of ten men with Duchenne muscular dystrophy, we explore the complex social processes that mediate the lives of persons who are dependent on multiple medical and assistive technologies. In doing so we consider the embodied and emplaced nature of disability and how life is lived (...) through bodies coupled with technologies and experienced as ‘techno-body-subjects in situ’. Normative implications for theory and research, including bioethics research, are discussed. (shrink)

All of our information about the world is derived from the function of our senses, and thus they are the principal source of all our knowledge. This was recognized explicitly by early Greek philosophers, remained an important point of discussion for nineteenth‐century philosophers, and continues to be a key issue for present‐day philosophers, psychologists, and neuroscientists. It is a key issue in cognitive science because, by initiating the processes that store and evaluate information, sensory information transmission can be considered a (...) cognitive initiator. In a very real sense, who we are and how we see the world are the result of the experiences that are mediated by our sensory systems. These are some of the reasons why the study of sensory systems has occupied such a prominent place in modern cognitive neuroscience. (shrink)