Acknowledging the skeletons in our closet: the effect of group affirmation on collective guilt, collective shame, and reparatory attitudes

Just as with threats to personal identity, people defend against social identity threats. In the context of intergroup injustice, such defensiveness undercuts collective guilt and its prosocial consequences. The current research examines whether group affirmation allows perpetrator groups to disarm threat without undermining guilt. In Study 1, men accepted greater guilt for gender inequality after affirming the ingroup. Given the distinction between collective guilt and collective shame, Studies 2-4 assessed both emotions and revealed that Canadians accepted greater guilt and shame over the mistreatment of Aboriginals following group affirmation. In Study 3, group affirmation also moderated the relation of each emotion with reparatory attitudes. When controlling for each other, collective shame predicted compensation in a nonaffirmation control condition whereas guilt predicted compensation once identity threat had been disarmed by group affirmation. In Study 4, the effect of group affirmation on the collective emotions was mediated by defensive appraisals of the injustice.     

The Effects of Atropine and Adrenergic Antagonists on Behavioral Arousal in Rats

Two experiments investigated the mechanism for changes in measures of behavioral arousal inhibition in rats following administration of atropine. In Experiment 1, 40-day-old rats were given administrations of atropine sulfate, the α-, β-adrenergic blocker labetalol, or both. The drugs, either alone or in combination, increased transport response intensity, whereas both together increased dorsal immobility durations. In Experiment 2, rats were given atropine, the β-adrenergic antagonist propranolol, the α-adrenergic antagonist phentolamine, or a combination of two of the drugs. Propranolol blocked atropine-induced increases in transport response, and phentolamine was without effect. Phentolamine, when combined with atropine, increased dorsal immobility durations. Results are discussed with respect to aspects common to both transport response and dorsal immobility.     

Caffeine enhances the physiological response to occupational stress in medical students

Caffeine (3.3 mg/kg) was tested against a placebo in 20 male medical students during periods of low (no exams) versus high (final exams) work stress. On each of 8 test days, heart rate and blood pressure were measured at baseline and over a 40-min postdrug interval; immediately afterward, blood was drawn to test plasma cortisol and serum lipid concentrations. Exams increased heart rate (p less than .005) and systolic blood pressure (p less than .02). Caffeine decreased heart rate (p less than .0001) and increased systolic blood pressure (p less than .005), diastolic blood pressure (p less than .0001), plasma cortisol levels (p less than .01), and serum cholesterol levels (p less than .02). Caffeine effects were additive with those of exams, and together they increased the number of men showing systolic blood pressures in the borderline hypertensive range. Thus, caffeine use during periods of increased occupational stress may enhance the cumulative stress response.     

Gender Differences in Reactions to the Sexualization of Athletes

Participants rated a series of photographs that depicted well-known male and female athletes in a sexualized fashion or not. In general, sexualized targets were perceived as more attractive but as less competent than non-sexualized targets, and for ratings of competence, sexualization effects were greater for female targets. Sexualization had no effects on women’s perceptions of the competence of male targets, whereas for men, sexualization affected their perceptions of the competence of both male and female targets, although the influence of sexualization was stronger for female targets than it was for male targets. These findings suggest that the gender of the target and of the perceiver needs to be considered when evaluating the influences of sexualization. The implications of these findings are discussed within the context of objectification theory, which has focused on the objectification of women by women.     

Foreign Language Training Transfer: Individual and Contextual Predictors of Skill Maintenance and Generalization

Foreign language proficiency is a critical skill in which many U.S. military personnel receive extensive training. However, very little research has examined the factors associated with the successful transfer of this training. This study therefore investigates the impact of individual and contextual variables on two different types of foreign language skill transfer measures in a military context. Archival data were analyzed from 133 U.S. Army Special Forces (Green Berets) teams, including 919 Soldiers who had completed job-required foreign language training. Results indicate that initial skill acquisition had a positive impact on both the maintenance and generalization of language skills. The posttraining time interval between training and transfer measurement was negatively associated with skill maintenance, suggesting significant skill decay over time. The team context also accounted for significant variability in skill transfer, and the team mean skill level moderated the relationship between individual initial skill and subsequent generalization to job performance.     

Mixed Generation Sensitivity Analysis: An Optimal Scenario Study

There are several generating units available to meet the load demand on any given day. The mixed‐integer programme case engages generating units that can be shut down or operated between minimum and maximum output levels within a specific time demand block. An examination of these conditions espouses the utilization of renewable energy technology as a reliable power generation source and its effectiveness and augmentation in a robust, heavily subjugated thermal generation system. The mixed‐integer problem has the predisposition to generate many subproblems during the computation. However, with careful selection of the parameters in the model, the challenges are easily overcome. Hydroelectric energy is significant from an operational standpoint as it requires little or no ramp‐up time, commonly found in many combustion technologies. The essential load‐following capability, peaking capacity and voltage stability attributes render hydroelectric energy as a significant part in ensuring reliable electricity service and in meeting customer needs in a market‐driven industry. When this renewable resource is combined with the thermal generation, an improved reliability function is apparent. Yet, in order to minimize the environmental effects inherent in this type of energy resource, the renewable power supply is expected to produce an effectual, consistent output. The integration of renewable generation within the electrical system entails intricate analysis of the transmission line upgrades throughout the system. These upgrades are designed to relieve congestion, improve reliability and provide voltage support by thoroughly evaluating the alternatives to accommodate the new expansion efforts. This paper examines the system integration of renewable generators, via simulated studies, in the context of electrical operations from the hydroelectric generation perspective. Copyright © 2014 John Wiley & Sons, Ltd.     

Shorter articles and notes probability-learning in the monkey

Tested in a choice-situation, two rhesus monkeys showed a correspondence between choice-ratios and reinforcement-ratios. The basis of this event-matching proved to be different in the monkey from that in lower forms.