Social anxiety and vulnerability for problematic drinking in college students: the moderating role of post-event processing

Socially anxious college students are at increased risk for engaging in problematic drinking (i.e. heavy or risky drinking) behaviors that are associated with the development of an alcohol use disorder. The present study examined whether post-event processing (PEP), repeatedly thinking about and evaluating one’s performance in a past social situation, strengthens the association between social anxiety and vulnerability to problematic drinking among college students. Eighty-three college drinkers with high or low social anxiety participated in a social interaction task and were exposed to a manipulation that either promoted or inhibited PEP about the social interaction. Among participants randomized to the PEP promotion condition, those with high social anxiety exhibited a greater urge to use alcohol after the social interaction and greater motivation to drink to cope with depressive symptoms over the week following the manipulation than did those with low social anxiety. These findings suggest that targeting PEP in college drinking intervention programs may improve the efficacy of such programs for socially anxious students.     

Stochastic matching and the voluntary nature of choice

Attempts to characterize voluntary behavior have been ongoing for thousands of years. We provide experimental evidence that judgments of volition are based upon distributions of responses in relation to obtained rewards. Participants watched as responses, said to be made by "actors," appeared on a computer screen. The participant's task was to estimate how well each actor represented the voluntary choices emitted by a real person. In actuality, all actors' responses were generated by algorithms based on Baum's (1979) generalized matching function. We systematically varied the exponent values (sensitivity parameter) of these algorithms: some actors matched response proportions to received reinforcer proportions, others overmatched (predominantly chose the highest-valued alternative), and yet others undermatched (chose relatively equally among the alternatives). In each of five experiments, we found that the matchingactor's responses were judged most closely to approximate voluntary choice. We found also that judgments of high volition depended upon stochastic (or probabilistic) generation. Thus, stochastic responses that match reinforcer proportions best represent voluntary human choice.     

Complicity and the responsibility dilemma

Philosophical Studies - Jeff McMahan famously defends a moral inequality of combatants, where liability to be attacked and potentially killed in war, should be grounded in the individual...     

An oscillatory mechanism for prioritizing salient unattended stimuli

To survive in a complex world, it is important that unattended, but salient, input can still draw one's attention. In this article, we suggest that posterior alpha oscillations (8-13Hz) provide a mechanism for prioritizing and ordering unattended visual input according to 'relevance'. Gamma oscillations (30-100Hz) that are phase-locked to the alpha oscillations keep competing unattended representations apart in time, thus creating a sequence of perceptual cycles. As inhibition gradually lowers within an alpha cycle, the ordered sequence of competing input is activated, producing a temporal phase code for saliency. The proposed mechanism is based on recent experiments indicating that the phase of alpha activity modulates perception and that alpha oscillations are produced by periodic pulses of inhibition.     

Liking Violence and Action: An Examination of Gender Differences in Children's Processing of Animated Content

It is widely assumed that children like violence in cartoons, but this assumption has not been supported in existing studies that show nonviolent programs are liked just as much or more than violent programs. The present experiment extended enjoyment of media violence research by testing whether violence and action (independently manipulated) influenced children's liking of slapstick cartoons. We also proposed a path model to test potential indirect effects of violence and action on liking. Using animation software, four versions of a slapstick cartoon were created that varied in terms of violence (present, absent) and action (high, low). A total of 128 elementary school children watched one of the four versions of the program. Violence had no direct effect on the liking of the cartoon, but did indirectly decrease liking for males by decreasing boys' wishful identification with the anthropomorphized characters. Action increased liking for males but not for females.     

Moving European research on work and ageing forward: Overview and agenda

This longitudinal retrospective study shows that when the results of an organizational development intervention are fed back properly and action plans are made, factors associated with leadership and commitments to organization are enhanced. The study compared the effects of survey feedback, including the making of action plans and survey feedback without action plans, to the effects of no feedback at all on several psychosocial factors and sick leave over a 3-year period. The data were derived from 1236 individuals for whom baseline data were available and who completed a 3-year follow-up. Applied statistics revealed that the feedback action plan group reported greater improvements regarding leadership factors and commitment to the organization. The results reveal no differences between the feedback groups in regard to sick leave. There is a need for further studies, preferably with a randomized control design, on how to enhance both the psychosocial work environment and employee health and also how to reduce sick leave in the workplace.     

Mechanisms of change in cognitive behaviour therapy for panic disorder: The role of panic self-efficacy and catastrophic misinterpretations

The efficacy of cognitive behavioural therapy (CBT) for panic disorder with or without agoraphobia (PD) is well-established; however, little is known about the underlying change processes of clinical improvement during therapy. According to cognitive theories, CBT for PD primarily works by changing catastrophic misinterpretations of bodily symptoms and panic attacks. However, panic self-efficacy, i.e. the perceived ability to cope with panic attacks, has also been suggested as an important change mechanism in CBT for PD. The aim of the study was to investigate if change in catastrophic misinterpretations and panic self-efficacy mediated change in the level of anxiety during the course of thirteen sessions of group CBT for PD. Forty-five participants completed weekly self-report measures of the possible cognitive mediators and the level of anxiety throughout therapy. The results indicated that within-person change in panic self-efficacy in one session, but not in catastrophic misinterpretations, predicted within-person level of anxiety symptoms the following week. However, in a reversed analysis, prior change in level of anxiety symptoms also predicted change in panic self-efficacy the following session. These results support panic self-efficacy as a mediator of change in CBT for PD, although a reciprocal causal relationship between panic self-efficacy and level of anxiety seems to be implied.