Decision-making deficits in drug addiction

Core aspects of addictive behaviour can be explained in terms of abnormal decision-making. Using recording of autonomic function during performance of two gambling tasks, Bechara et al. have recently identified three distinct neuropsychological subtypes in individuals with substance dependence. These subtypes may reflect dissociable patterns of disruption in limbic brain circuitry.     

Investment in body image among patients diagnosed with or at risk for malignant melanoma

We examined investment in body image among 48 patients diagnosed with, or at risk for malignant melanoma (MM), as well as factors hypothesized as related to increased investment, such as gender, perceived stress, mood, fatigue, and personality characteristics. Investment in body image was evaluated using the Measure of Body Apperception [Carver, C. S., Pozo-Kaderman, C., Price, A. A., Noriega, V., Harris, S. D., Derhagopian, R. S., Robinson, D. S., & Moffat, F. L. Jr. (1998). Concern about aspects of body image and adjustment to early state breast cancer. Psychosomatic Medicine, 60, 168–174]. Results showed that women reported more concerns about physical appearance than men, and patients with MM exhibited more concerns about body integrity than at-risk patients. Concerns about body integrity were related to more compulsive personality characteristics, whereas concerns about appearance were associated with more histrionic personality characteristics. Body image investment was related to poorer adjustment as indicated by heightened symptoms of fatigue and stress. This study suggests that further research on investment in body image in this patient population is warranted.     

A Semantics and Methodology for Ceteris Paribus Hypotheses

Taking seriously the arguments of Earman, Roberts and Smith that ceteris paribus laws have no semantics and cannot be tested, I suggest that ceteris paribus claims have a kind of formal pragmatics, and that at least some of them can be verified or refuted in the limit. This revised version was published online in July 2006 with corrections to the Cover Date.     

The Differential Effects of Extracurricular Activities on Attributions in Résumé Evaluation

This study examines the effects that extracurricular activities have on the attributions a résumé reader makes about an applicant. Three characteristics of extracurricular activities (number of activities, holding positions of leadership, and relevance of the activities) were manipulated across 24 résumés of fictitious college graduates. Some 219 raters read the résumés and made judgments about the level of the applicant’s quality. The results showed a main effect for the number of activities, a main effect for holding leadership positions, and a main effect for relevance of the activity. Furthermore, a three–way interaction revealed the differential effects that the relevance of the activities had on the attributions at different levels of leadership and number of activities. A mix of career–related and social activities garnered higher ratings for those who held leadership positions in five activities. However, for those who were leaders in only two activities or were not leaders in five, having only career–related activities earned them higher ratings. For applicants who were not leaders in two activities, relevance of the activities played no role.     

Perceived racism and vascular reactivity in black college women: moderating effects of seeking social support.

This quasi-experimental study explored the association of perceived racism and seeking social support to vascular reactivity in a college sample of 110 Black women. Perceived racism and seeking social support were assessed via self-report, and vascular reactivity was measured before and during a standardized speaking task. Hierarchical regression analyses indicated that perceived racism was positively related to changes in systolic blood pressure. These analyses also indicated that seeking social support moderated the relationship between perceived racism and systolic blood pressure changes. This interaction effect persisted after controlling for several potential confounders. Follow-up regression analyses showed that perceived racism was positively associated with reactivity among participants who were low in seeking social support. A significant relationship was not observed between perceived racism and systolic blood pressure changes among participants who were high in seeking social support. Perceived racism and seeking social support were not significantly associated with changes in diastolic blood pressure. These findings highlight the importance of examining psychosocial factors that may mitigate the hypothesized relationship between perceived racism and reactivity.     

Human Nature: What We Need to Know about Ourselves in the Twenty-First Century

The Western worldview that now dominates the planet embodies beliefs about human nature that are inconsistent with our evolutionarily evolved natures. Its "logic" at best ignores and at worst creates the symptoms of the modern world, which if uncorrected predict severe crises in coming centuries: population growth, environmental destruction, economic collapse, and increasing social violence. In contrast, there are numerous communities today creating alternative solutions based on different understandings of human nature and human needs: cooperation rather than competition; meaningful social identity; and respect for and trust in the autonomous behavior of all persons. There exist optimistic future models.