Should Global Conservation Initiatives Prioritize Phylogenetic Diversity?

Philosophia - Some recent conservation proposals – including the Zoological Society of London’s (ZSL) EDGE of Existence programme – have focused on the value of protecting species...     

Witnessed inclusion improves identification of Duchenne and non-Duchenne smiles

Social exclusion threatens a person's need to belong and prompts them to behave in ways that often facilitate reaffiliation. For adults, direct exclusion increases attention to social information and facial cues, including an enhanced identification of Duchenne and non-Duchenne smiles. Furthermore, inclusion can buffer or mitigate the effects of exclusion. This study investigated children's (N = 44) and adults’ (N = 52) sensitivity to perceptual changes in smiles following witnessed inclusion and exclusion and inclusion's mitigating and buffering effects on perceptual abilities. Contrary to our predictions, participants in our study demonstrated improved accuracy after witnessing inclusion, rather than exclusion, and showed no buffering or mitigating effects of inclusion. This contradiction with previous findings points to a further need to explore the effects of witnessed versus direct inclusion and exclusion, especially if witnessed inclusion and exclusion have the ability to impact perception and shape our behavior.     

What Is the Practical Utility of Value Research for Organisational Practitioners in a Global Context?

The lead article by Arieli and colleagues provides an overview of value research in broadly defined organisational contexts. The proposed aim of the review is to “integrate theories and empirical studies aiming to portray the role of personal values in shaping the choices and behavior in work settings” (p. 1). In my review I highlight problems with implicit assumptions and limitations of the current literature, in particular: (1) the assumption that values show a universal structure across populations and situations; (2) the assumption that values are relatively stable over a person's career; (3) the unclear ontological status of values combined with a lack of studies examining causality underlying value-behaviour correlations; (4) the relative effect sizes of value research and their organisational relevance; and (5) unclear paths for actions that organisations may take based on the current value literature (what interventions can organisations adopt to improve value profiles?). In summary, the review provides a summary of current organisational value research that highlights how much we still have to understand about value processes.     

Assessing multiple facets of gender identity: the gender identity questionnaire.

314 men and 451 women participated in a study to assess the reliability and validity of the multifaceted Gender Identity Questionnaire. Reliability coefficients of the (sub)scales varied between .67 and .80; content, criterion, and construct validity were satisfactory.     

The depression proneness rating scale: Reliability, validity, and factor structure

This study describes the development of the Depression Proneness Rating Scale (DPRS), a brief, self-administered measure of the tendency to experience frequent, long-lasting, and severe depressions, and three investigations into the scale’s reliability, validity, and factor structure. Study 1, using 100 university students, found a stability coefficient of .82 for the DPRS over a test-retest interval of nine weeks. Further, Time 1 (T1) DPRS scores predicted Time 2 (T2) symptoms of depression, even after adjusting for Time 1 symptoms (R² Change=.03). Study 2, using 440 university students, found the DPRS to be a better predictor of past depressive episodes (r=.41 to .47) than was the Beck Depression Inventory (r=.32). Study 3, using 1101 university students, found that all 13 items of the DPRS loaded .40 or greater on a single factor for both males and females. Overall, results provide substantial evidence for the DPRS as a valid, unidimensional, and practical measure of depression proneness.     

Characteristics of Completed Suicides: Implications of Differences Among Methods

Approximately 30% of suicides in New York City are the result of jumping from a height. After describing jumping suicides and jumping sites, we used polychotomous logistic regression to compare the characteristics of suicides by jumping to those of individuals committing suicide by hanging, ingestion, or shooting. Method used was significantly associated with sociodemographics, occupation, and mental health status, even after adjustment for individual access to the means of committing suicide. Our finding of an independent association between personal characteristics and method used provides strong evidence for the hypothesis that controlling access to an agent of suicide can influence overall suicide rates, at least in the short term. Study results support the introduction of preventive programs to control access to commonly employed agents of suicide.