Adaptation can optimize information processing by allowing the visual system to always adjust to the environment. However, only a few studies have investigated how the visual system makes adjustments to repeatedly occurring changes in the input, still less about the related neural mechanism. Our previous study found that contrast adaptation attenuated after multiple daily sessions of repeated adaptation, which was explained by the habituation of either the adapter’s effective strength or the adaptation mechanisms. To examine the former hypothesis, in the (...) present study we used the frequency tagging technique to measure the adapter-elicited steady-state visual evoked potential amplitudes. Participants repeatedly adapted to the same contrast adapter in a top-up manner for six continuous days, which was called training of adaptation. The behavioral adaptation effect and SSVEP response to the trained adapter and an untrained control adapter were measured before and after training. The psychophysical results showed that the effect of adaptation in the trained condition significantly reduced after training, replicating our previous finding. Contradicting the prediction of the hypothesis that repeated adaptation attenuated the effective strength of the adapter, the SSVEP amplitude was unchanged after training, which was further confirmed by an equivalence test. Taken together, the results challenge the account of habituation of adapter in repeated adaptation, while leaving the account of habituation of adaptation mechanism to be tested. (shrink)

The general consensus emerging from decades of empirical investigation of metaphor processing is that, when appropriately contextualised, metaphorically used language is no more demanding of processing effort than literally used language. However, there is a small number of studies which contradict this position, notably Noveck, Bianco, and Castry (2001): they maintain that relevance-based pragmatic theory predicts increased cognitive costs incurred in deriving the extra effects that metaphors typically yield, and they provide experimental results that support this prediction. In our study, (...) we first surveyed and assessed the tasks and stimulus materials of many experiments on metaphor processing from the 1970's to the present day. The most telling result was an apparent disparity between the processing of metaphorical language used predicatively versus referentially. We then ran two self-paced reading experiments to test our hypothesis that when used as a predicate, metaphorical language is no more costly than literal language, but when used referentially, it does incur extra costs, even given a preceding biasing context. In the first experiment, all metaphorical referring expressions were in subject position so occurred early in the sentence; in the second experiment, we controlled for any effect of sentence position by placing metaphorical referring expressions in object position, thus later in the sentence, similar to the predicate metaphors. In both cases, metaphorical referring incurred significantly greater costs relative to literal equivalents than did metaphorical predication, with no effect of sentence position. We end with a brief analysis of why the referential use of metaphor is special and effort-demanding. (shrink)

This study explores how and when ethical leadership predicts three forms of team-level creativity, namely team creativity, average of member creativity, and dispersion of member creativity. The results, based on 230 members of 44 knowledge work teams from Chinese organizations, showed that ethical leadership was positively related to team creativity and average of member creativity but was negatively related to dispersion of member creativity. Consistent with the predictions of uncertainty reduction theory, psychological safety climate mediated the relationship between ethical leadership (...) and the three forms of team-level creativity. Furthermore, supervisor support for creativity positively moderated the effect of ethical leadership on psychological safety climate and the indirect effects of ethical leadership on the three forms of team-level creativity through psychological safety climate. The analysis offers significant theoretical and practical implications on ethical leadership and creativity in organizations. (shrink)

This exploratory research compares the interactive metadiscourse use by native English-speaking English for academic purposes writing teachers in the United Kingdom and their non-native counterparts in the Chinese contexts. The analysis is based on a self-compiled corpus, including two sub-corpora, which were composed of instructor contributions to classroom discourse: eight sessions of EAP lessons from the Chinese context and eight sessions of EAP lessons from the British context. Adopting an interpersonal model of metadiscourse, the two sub-corpora were compared to examine (...) the similarities and differences in their use of interactive metadiscourse. Findings of the comparative analysis reveal that EAP teachers from both contexts rely heavily on transition markers and frame markers to organize their teaching but differ in particular linguistic realizations. This may indicate the impact of a range of factors such as logical preferences, development order of acquisition, discourse community, and speech community on teachers’ interactive metadiscourse strategies. The article concludes with a few implications for metadiscourse research in spoken academic genres. (shrink)

'The problem of the twentieth-century is the problem of the color-line.' Originally published in 1903, The Souls of Black Folk is a classic study of race, culture, and education at the turn of the twentieth century. With its singular combination of essays, memoir, and fiction, this book vaulted W. E. B. Du Bois to the forefront of American political commentary and civil rights activism. The Souls of Black Folk is an impassioned, at times searing account of the situation of African (...) Americans in the United States. Du Bois makes a forceful case for the access of African Americans to higher education, memorably extols the achievements of black culture (above all the spirituals or 'sorrow songs'), and advances the provocative and influential argument that due to the inequalities and pressures of the 'race problem', African American identity is characterized by 'double consciousness'. This edition includes a valuable appendix of other writing by Du Bois, which sheds light on his attitudes and intentions. ABOUT THE SERIES: For over 100 years Oxford World's Classics has made available the widest range of literature from around the globe. Each affordable volume reflects Oxford's commitment to scholarship, providing the most accurate text plus a wealth of other valuable features, including expert introductions by leading authorities, helpful notes to clarify the text, up-to-date bibliographies for further study, and much more. (shrink)

Based on social cognitive theory, this paper explored the cognitive mechanism between ethical leadership and the followers’ extra-role performance. We tested a moderated mediation model in which general self-efficacy mediated the relationship between ethical leadership and the employee extra-role performance, while intrinsic motivation moderated the relationship between ethical leadership and subordinate’s general self-efficacy. Data were collected in two waves from 208 dyads. Results supported the time-lagged effect of ethical leadership on individual extra-role performance and the mediating role of general self-efficacy. (...) Moreover, our findings revealed that intrinsic motivation positively moderated the effect of ethical leadership on general self-efficacy. Furthermore, intrinsic motivation also moderated the indirect effect of ethical leadership on extra-role performance via general self-efficacy. Theoretical and practical implications were further discussed. (shrink)

The distinguished American civil rights leader, W. E. B. Du Bois first published these fiery essays, sketches, and poems individually nearly 80 years ago in the Atlantic, the Journal of Race Development, and other periodicals. This volume has long inspired readers with its militant cry for social, political, and economic reforms for black Americans.

Enterprises often post branded content on social media and adopt a proactive response approach to improve digital customer engagement to gain a competitive advantage. However, there are many brands which fail to operate social media as effectively as expected. The effective use of brand social media strategies to improve digital customer engagement remains an ongoing challenge for the enterprises. Based on firm-generated content theory and social presence theory, this study aims to identify the impact of brand social media strategies on (...) different levels of digital customer engagement, including positive filtering, cognitive and affective processing as well as advocacy from content strategy and response strategy. Based on 1,519 brand posts on the official Weibo pages of eight of the top 500 Chinese brands in 2021, this study uses a multiple linear regression model to examine the impact of brand social media strategies on digital customer engagement and the moderating effects of brand image and discretionary purchases. The findings show that, on the one hand, among the brand social media content strategies, action content strategy is associated with higher levels of digital customer engagement. On the other hand, different brand social media response strategies have a differential impact on digital customer engagement levels, with cohesive response being the best strategy for increasing digital customer engagement level. In addition, the effectiveness of brand social media response strategy in digital customer engagement is further moderated by the brand image and discretionary purchases. In contrast, the effectiveness of brand social media response strategy in digital customer engagement is stronger when the brand image emphasizes its “competence” or the discretionary purchases focus on “material purchases.” This study not only enriches the research on digital customer engagement but also provides a reference for the brand strategy selection, design and management based on social media. (shrink)

This chapter presents an essay by W. E. B. Du Bois that deals with the issue of race. He raises questions such as: What is the real meaning of race. What has, in the past, been the law of race development? What lessons has the past history of race development to teach the rising Negro people? He describes the American Negro Academy, which aims at once to be the epitome and expression of the intellect of the black-blooded people of America, (...) the exponent of the race ideals of one of the world's great races. He concludes by outlining a proposed creed for the Academy. (shrink)

With the development of industrialization and urbanization, cities have become the main carriers of economic activities. However, the long-term development of cities has also caused damage to resources and the environment. Hence, objective and scientific evaluation of urban low-carbon sustainable development capacity is very important. An index system of urban low-carbon sustainable development capability is constructed in this paper, and a TOPSIS-BP neural network model is established to evaluate the low-carbon sustainable development capability of Beijing, Shanghai, Shenzhen, and Guangzhou in (...) China. At the same time, the difference degree of low-carbon sustainable development level in these four cities is analyzed by standard deviation and coefficient of variation, and the influencing factors of urban low-carbon sustainable development ability are extracted by grey correlation analysis. The results show that the capability of low-carbon sustainable development in four cities is rising and the difference of low-carbon sustainable development capability is decreasing; the general view that the higher the general investment in low-carbon sustainable development, the higher the level of low-carbon sustainable development in cities has not been verified; with the change of time series, the factors affecting the capability of low-carbon sustainable development in the same city are different and the influence of the same factor on the capability of low-carbon sustainable development in different cities is different. (shrink)

t. 1. Compendia et logica -- t. 2. Moralis -- t. 3. Metaphysica -- t. 4. Physica generalis -- t. 5. Physica particularis.

Objective: Based on the theory of perceived organizational support (POS), conservation of resource (COR) and job demands-resources (JD-R) model, this study establishes a moderated mediation model to test the role of job satisfaction in mediating the relationship between perceived organizational support and job burnout, as well as the role of regulatory emotional self-efficacy in moderating the above mediating process. Method: A total of 784 police officers were surveyed with the Perceived Organizational Support Scale, the Job Burnout Questionnaire, the Regulatory Emotional (...) Self-Efficacy Scale, and the Minnesota Job Satisfaction Questionnaire. Results: (1) After controlling for gender, seniority, age, police classification, education, and marital status, regression analysis showed a significant negative correlation between perceived organizational support and burnout (r = -0.42, p < 0.01), and the former had a significant negative predictive effect on job burnout (β = -0.42, p < 0.001). (2) The mediating effect test shows that job satisfaction plays a partial role in mediating the relationship between perceived organizational support and job burnout. (3) Through the analysis of the moderated mediation model test, regulatory emotional self-efficacy moderates the first half of the path of “perceived organizational support → job satisfaction → job burnout". Conclusion: Perceived organizational support not only directly affects police job burnout but also indirectly affects police job burnout through job satisfaction. Regulatory emotional self-efficacy enhances the influence of organizational support on job satisfaction. This study indicates the combined effect of perceived organizational support, job satisfaction and regulatory emotional self-efficacy on job burnout and has certain guiding significance for alleviating police job burnout. Keywords: Perceived organizational support, Job burnout, Job satisfaction, Regulatory emotional self-efficacy, Moderated mediation. (shrink)

A moving cultural biography of abolitionist martyr John Brown, by one of the most important African-American intellectuals of the twentieth century. In the history of slavery and its legacy, John Brown looms large as a hero whose deeds partly precipitated the Civil War. As Frederick Douglass wrote: "When John Brown stretched forth his arm... the clash of arms was at hand." DuBois's biography brings Brown stirringly to life and is a neglected classic.

In this paper, we examine the interactive effects of positive affect and perspective-taking on workplace incivility and family incivility, through moral disengagement. We draw from broaden-and-build and moral disengagement theories to suggest a potential negative consequence of positive affect. Specifically, we argue that positive affect increases incivility toward coworkers and spouses through moral disengagement among employees with low, but not high perspective-taking. Data from two time-lagged field studies and one online experiment provide support for our hypotheses. These findings suggest that (...) the beneficial effects of positive feelings are not universal, and the fostering of positive feelings at work might have unintended negative consequences, namely moral disengagement, and increased incivility at work and at home. Implications for theory and research are discussed. (shrink)

Perspective-taking is an important ability to imagine the world from another’s point of view. Prior studies have shown that younger adults are more likely to consider the opinions of age-based in-group members relative to out-group members. However, the cause of this priority is still unknown. We conducted three independent studies to explore the effect of intergenerational contact on younger adults’ PT toward older adults and the possible roles of stereotyping and intergroup anxiety. A total of 192 college students completed the (...) Perspective taking Scale in Study 1 after being primed with age-based intergroup relationships. The results indicated that younger adults found it more difficult to take the perspective of older adults than that of their peers. 200 college students completed the Prior Contact Scale, Intergroup Anxiety Scale, Negative Stereotype Scale, and PT Scale in Study 2. The results demonstrated that intergenerational contact improved PT toward older adults by disrupting negative stereotypes, and intergroup anxiety moderated this mediating relationship. A total of 215 college students completed the PT Scale in the context of imagining intergenerational contact in Study 3. Interestingly, imagined contact effectively increased younger adults’ ability to take older adults’ perspectives. The present research verifies that contact is important for influencing younger adults’ emotional and attitudinal factors that are critical to improving younger adults’ ability to take older people’s perspectives. This is of great significance for developing harmonious intergenerational relationships. (shrink)

The history of European western philosophy.

W. E. B. Du Bois was a public intellectual, sociologist, and activist on behalf of the African American community. He profoundly shaped black political culture in the United States through his founding role in the NAACP, as well as internationally through the Pan-African movement. Du Bois's sociological and historical research on African-American communities and culture broke ground in many areas, including the history of the post-Civil War Reconstruction period. Du Bois was also a prolific author of novels, autobiographical accounts, innumerable (...) editorials and journalistic pieces, and several works of history. Collected in one volume for the first time, The World and Africa and Color and Democracy are two of W E. B. Du Bois's most powerful essays on race. He explores how to tell the story of those left out of recorded history, the evils of colonialism worldwide, and Africa's and African's contributions to, and neglect from, world history. More than six decades after W. E. B. Du Bois wrote The World and Africa and Color and Democracy, they remain worthy guides for the twenty-first century. With a series introduction by editor Henry Louis Gates, Jr., and two introductions by top African scholars, this edition is essential for anyone interested in world history. (shrink)

New foreword written by HeritageMom, Amber O'Neal Johnston. "During a time when the United States needed to be reminded of the contributions Black people have made to its democracy, freedom, music, literature, and more, W.E.B. Du Bois took on the task of enumerating the gifts that we've provided to our country. "When I began reading The Gift of Black Folk...the story that unfolded was one that I had never anticipated. We the People of the United States, all of us, have (...) left our indelible mark on America the Beautiful." -Amber O'Neal Johnston In 1924, William Edward Burghardt (W.E.B.) Du Bois (1868-1963) penned The Gift of Black Folk in response to systemic racism in the United States, showing that "...the American spirit is a new and interesting result of diverse threads of thought and feeling coming not only from America but from Europe and Asia and indeed from Africa." Du Bois was the first African American to earn a Ph.D. from Harvard University, and later became a professor of history, sociology, and economics at Atlanta University. In 1909 he co-founded the NAACP. Du Bois was a lifelong leader and proponent of civil rights. Amber O'Neal Johnston is a writer, speaker, and home educator who blends life-giving books with a culturally-rich environment for her four children and others. She's the author of A Place to Belong, a guide for families of all backgrounds to celebrate cultural heritage and embrace inclusivity in the home and beyond, and she's known for sharing literary "mirrors and windows" on HeritageMom.com. (shrink)

A thorough account of Africa's history and its lasting influence on Western culture told from the perspective of the disparate descendants who inherited its legacy. W.E.B. Du Bois highlights the hidden stories that connect these varied communities. Originally published in 1915, The Negro presents an expansive analysis of the African diaspora over the course of history. W.E.B. Du Bois uses a critical eye to survey the early depictions of the continent, debunking stereotypical myths about its social structure. He addresses the (...) generational impact of slavery as well as the capitalistic system that made it possible. It's an honest look at the effects of white supremacy, classism and its place in modern society. From Ethiopia and Egypt to the West Indies and Latin America, Africa's influence is undeniable. The Negro sheds light on the ignored history of the continent and its many descendants. It's a vital piece of literature that acknowledges and celebrates its cultural power. With an eye-catching new cover, and professionally typeset manuscript, this edition of The Negro is both modern and readable. (shrink)

Drawing on the cognitive evaluation theory, we proposed a homologous multilevel model to explore how ethical leadership influenced employees’ innovative work behavior through the mediation of intrinsic motivation at both group and individual level. With questionnaires rated by 302 employees from 34 work units of two companies in the mainland of China, we conducted multilevel analysis to examine our hypotheses. The results showed that individual innovative work behavior was positively related to both individual perception of ethical leadership and group ethical (...) leadership, while individual intrinsic motivation mediated the two relationships. Moreover, group intrinsic motivation mediated the relationship between group ethical leadership and innovative work behavior. The theoretical and practical implications were further discussed. (shrink)

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be (...) preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Originally published in 1941. Herodicus was a Greek physician of the fifth century BC, and a native of Selymbria. The first use of therapeutic exercise for the treatment of disease and maintenance of health is credited to him, and he is believed to have been one of the tutors of Hippocates.