Different measures of risk perceptions yield different patterns of interaction for combinations of hazards: smoking,family history and cardiac events

Some combinations of hazards yield disease rates greater than would be expected from the risk attributable to each hazard in isolation. However, perceptions are often more consistent with the combined risk being seen as less than the sum of the individual factors, raising concerns over the validity of some measures of risk perception. Here, 249 adults estimated the risk of cardiac events for four hypothetical men, described as having high or low levels of smoking and family history of heart disease. Three distinct measures were used. A 9‐point scale produced a strong sub‐additive interaction, a 101‐point scale produced a weaker sub‐additive interaction, and an unbounded scale produced no interaction. In this study, as in all previous research, scales with relatively few points (here a 9‐point scale) yield sub‐additive interactions. Given the consistency of results yielded by such scales, irrespective of context, it is concluded that these scales are not valid for perceptions of multiple risk factors. Copyright © 2004 John Wiley & Sons, Ltd.     

Development of the Spiritual Transcendence Index

In response to calls from the scientific community for improved conceptualizations and measures of spirituality, we describe the concept of "spiritual transcendence" and the development of the Spiritual Transcendence Index (STI). Spiritual transcendence refers to a perceived experience of the sacred that affects one'sself–perception, feelings, goals, and ability to transcend one'sdifficulties. The STI is an eight–item measure of this construct developed and refined based on rational considerations, input from three focus groups of religious leaders, and a reciprocal process of empirically testing the item pool and revising it across six successive surveys. The final scale, together with measures of related constructs, was tested in 220 randomly selected community residents. Although further study of the scale is needed, the STI demonstrated high consistency and validity across several samples in these initial exploratory studies.     

Catechol-O-methyltransferase Val158Met genotype affects neural correlates of aversive stimuli processing

It was previously shown that variation of the catechol-O-methyltransferase (COMT) gene modulates brain activity during the processing of stimuli with negative valence, but not for pleasant stimuli. Here, we tested whether the COMT genotype also modulates the electrophysiological correlates of emotional processing and explored whether the environmental factor of life stress influences this effect. Using the early posterior negativity (EPN) paradigm, event-related brain potentials were measured in 81 healthy individuals during the processing of pictures that evoked emotions of positive and negative valence. As was hypothesized, the COMT genotype affected the EPN amplitudes for unpleasant stimuli, but not for pleasant ones. Specifically, Met/Met carriers respond more sensitively to unpleasant stimuli, as compared with Val/Val carriers. We did not find evidence that life stress moderates the effect of the COMT genotype on emotional stimuli processing.     

Exploring numerical proportions in a unique context: The group support systems meeting environment

This paper reports the results of a study examining issues of group gender composition in a meeting setting employing group support systems (GSS). Research examining the effects of numerical proportions on group behavior has traditionally been conducted in settings where use of technology by groups is minimal. This research, however, examines the impact of varying group gender composition on brainstorming, social interaction patterns, and attitudes when technology is employed to facilitate and structure group process. In this setting, we find no gender-related differences in computer-based brainstorming. In the accompanying oral discussions, however, males display a higher proportion of task-related answers than females and uniform groups express more maintenance behavior than groups consisting of mixed genders. Our findings also show that uniform gender groups perceive greater participation in the decision process than skewed groups. Despite these gender-related differences, we found relatively little support for Kanter's Numerical Proportions Model in a GSS setting, given the range of measures explored in this study.     

Gender Bias in the Evaluation of Female Faculty at The Citadel: A Qualitative Analysis

The purpose of this study was to investigate the possibility of gender bias in student ratings of female faculty at The Citadel. Four (Caucasian) female faculty members, one at each level of academic rank, and four (Caucasian) male cadets were interviewed to determine their views on bias in the instructional process, especially with regard to ratings of faculty by students. From the data we concluded that there is a contradiction between beliefs about gender bias and the actual presence of bias for both faculty and students. Women are subjected to a double standard, and in the military setting of The Citadel, nontenure track female faculty are doubly penalized. Faculty women believe gender bias is part of the institutional culture, and contrapower harassment in ratings of female faculty by male students is likely.     

Paired-Associate Learning in Attention-Deficit/Hyperactivity Disorder as a Function of Hyperactivity-Impulsivity and Oppositional Defiant Disorder

A paired-associate learning (PAL) test was administered to 22 community volunteers without disruptive disorders and 197 children (7.5–13.5 years-old) presenting with the inattentive and combined subtypes of attention-deficit/hyperactivity disorder (ADHD) either in combination with or without oppositional defiant disorder (ODD). Participants were screened for learning disorders. In comparison to non-ADHD participants, children with ADHD achieved worse PAL and made errors rated as more acoustically and less semantically similar to the correct paired associates. These deficits were not related to hyperactivity–impulsivity or comorbid ODD. These results suggest that ADHD children are less competent at PAL and use less efficient learning strategies than their non-ADHD peers.     

Core self‐evaluations and subjective well‐being in the U.S. and the Philippines: The moderating role of self‐construal

Extant literature has shown that the compound personality variable core self‐evaluations (CSE) is associated with various psychological outcomes. However, there is a dearth of research on CSE across cultures. Consistent with self‐construal theory, because there can be differences in self‐construals within and between cultures, the present study examined the moderating role of culture on the relation between CSE and subjective well‐being while also allowing for individual differences in self‐construal in the US and the Philippines. In both countries, CSE positively predicted subjective well‐being. Notably, the association between CSE and subjective well‐being was stronger in the US than in the Philippines. In addition, independent self‐construal strengthened the positive impact of CSE on subjective well‐being especially in the US. Overall, CSE positively predicts subjective well‐being; however, the relationship depends on not only the cultural context, but also on individual differences in self‐construal.     

The functional independence of trait self-knowledge: Commentary on Sakaki (2007)

In a recent paper, Sakaki (2007) proposed that Klein and Loftus's conclusion that semantic and episodic trait self-knowledge are functionally independent (e.g., Klein, Babey, & Sherman, 1997; Klein & Loftus, 1993a; Klein, Loftus, Trafton, & Fuhrman, 1992b) was based on questionable assumptions and not supported by the available evidence. In this paper we show that Sakaki (2007) has misinterpreted our position on the independence of self-knowledge, omitted mention of large portions of the relevant research at odds with her contention, and conducted her studies with procedures we explicitly warned against due to interpretive ambiguities associated with their use.     

Prior cocaine exposure disrupts extinction of fear conditioning

Psychostimulant exposure has been shown to cause molecular and cellular changes in prefrontal cortex. It has been hypothesized that these drug-induced changes might affect the operation of prefrontal-limbic circuits, disrupting their normal role in controlling behavior and thereby leading to compulsive drug-seeking. To test this hypothesis, we tested cocaine-treated rats in a fear conditioning, inflation, and extinction task, known to depend on medial prefrontal cortex and amygdala. Cocaine-treated rats conditioned and inflated similar to saline controls but displayed slower extinction learning. These results support the hypothesis that control processes in the medial prefrontal cortex are impaired by cocaine exposure.