The striped mouse (Rhabdomys pumilio) from the succulent karoo, South Africa: a territorial group-living solitary forager with communal breeding and helpers at the nest

The authors studied the striped mouse (Rhabdomys pumilio) in the semiarid succulent karoo of South Africa. Mice forage alone, but they live in groups that share a common nest. Groups consist of 1 to 4 breeding females, 1 to 2 breeding males, and their offspring of both sexes, which remain in their natal group even after reaching adulthood, participating in territorial defense and nest building without showing signs of reproductive activity. Interactions are typically amicable and take place inside or in front of the nest. In contrast, encounters with mice from other groups are aggressive. Group living in the succulent karoo is possibly due to ecological constraints imposed by habitat saturation because of a year-round stable food supply as well as associated benefits of philopatry.     

Numerical support,information processing and attitude change

In two experiments we studied the prediction that majority support induces stronger convergent processing than minority support for a persuasive message, the more so when recipients are explicitly forced to pay attention to the source's point of view; this in turn affects the amount of attitude change on related issues. Convergent processing is the systematic elaboration on the sources position, but with a stronger focus on verification and justification rather than falsification. In Experiment 1 it was found that numerical support is related to information processing as predicted: The greater the support, the more convergent the processing. Experiment 2 replicated this result, and furthermore confirmed our expectations regarding attitude change: The more convergent processing occurs, the less subjects change their attitude on related issues.     

Less power or powerless? Egocentric empathy gaps and the irony of having little versus no power in social decision making

The authors investigate the effect of power differences and associated expectations in social decision making. Using a modified ultimatum game, the authors show that allocators lower their offers to recipients when the power difference shifts in favor of the allocator. Remarkably, however, when recipients are completely powerless, offers increase. This effect is mediated by a change in framing of the situation: When the opponent is without power, feelings of social responsibility are evoked. On the recipient side, the authors show that recipients do not anticipate these higher outcomes resulting from powerlessness. They prefer more power over less, expecting higher outcomes when they are more powerful, especially when less power entails powerlessness. Results are discussed in relation to empathy gaps and social responsibility.     

Motivated information processing and group decision-making: Effects of process accountability on information processing and decision quality

Integrating dual-process models [Chaiken, S., & Trope, Y. (Eds.). (1999). Dual-process theories in social psychology. NewYork: Guilford Press] with work on information sharing and group decision-making [Stasser, G., & Titus, W. (1985). Pooling of unshared information in group decision making: biased information sampling during discussion. Journal of Personality and Social Psychology, 48, 1467-1478.], we predicted that groups with high epistemic motivation engage in more information-driven and less preference-driven interaction, and achieve better decisions. An experiment manipulating process accountability showed that groups under process accountability experienced greater need for more information, repeated unshared information more often, and more often chose the correct decision alternative. Mediation analysis established that epistemic motivation produced high quality decisions because it stimulated systematic information processing. Results also revealed that preference heterogeneity stimulated information-driven interaction and led to higher decision quality.     

Self-regulation processes and health: the importance of optimism and goal adjustment

This article discusses how self-regulatory models can be used to understand people's response to health threats. The article begins with a general discussion of the principles and assumptions of self-regulatory models of behavior. Two distinct lines of research are then presented addressing two important processes of adaptive self-regulation. First, we provide a brief overview of the literature on optimism and adjustment to chronic disease and other health outcomes. Second, we present an overview of the process of disengagement from unattainable goals, focusing on recent research. We close by making recommendations for future research.     

Personal need for structure and creative performance: the moderating influence of fear of invalidity

Previous research has suggested that personal need for structure (PNS) is negatively related to creative performance. In this article, it is argued that this relation, in fact, depends on another personality variable: personal fear of invalidity (PFI). When PFI is high, PNS should indeed be negatively associated with creativity. However, PNS should be positively associated with creativity when PFI is low, because this combination enables people to take a structured approach to creative tasks and this can be helpful to overcome their reliance on conventional and accessible task strategies. In four studies, this hypothesis is tested using different measures of creative performance. The expected interaction effect is found for measures of ideational fluency and measures of originality but not for measures of flexibility. Moreover, it is shown that the interaction effect between PNS and PFI is mediated by perseverance within thought categories.     

You've gotta know when to fold 'em: goal disengagement and systemic inflammation in adolescence

The notion that persistence is essential for success and happiness is deeply embedded in popular and scientific writings. However, when people are faced with situations in which they cannot realize a key life goal, the most adaptive response for mental and physical health may be to disengage from that goal. This project followed 90 adolescents over the course of 1 year. Capacities for managing unattainable goals were assessed at baseline, and concentrations of the inflammatory molecule C-reactive protein (CRP) were quantified at that time, as well as 6 and 12 months later. To the extent that subjects had difficulties disengaging from unattainable goals, they displayed increasing concentrations of CRP over the follow-up. This association was independent of potential confounds, including adiposity, smoking, and depression. Because excessive inflammation contributes to a variety of adverse medical outcomes, these findings suggest that in some contexts, persistence may actually undermine well-being and good health.