Chester A. Insko’s research while affiliated with University of North Carolina at Chapel Hill and other places

In two experiments with the PDG we manipulated the Campbell (1958), or Wertheimer (1923), indices of entitativity (common fate, proximity, and similarity) to examine when a set of individuals interacts with another set of individuals in the competitive manner that is characteristic of group-on-group interactions. Experiment 1 found that interactions between two 3-person sets were more competitive when participants within each set shared (vs. did not share) common fate. In Experiment 2, the Wertheimer-Campbell indices were manipulated for one 3-person set only (targets). Participants in the other 3-person set were sequestered in separate rooms (observers). Observers as well as targets were more competitive when targets shared (vs. did not share) common fate. Path analyses in both experiments supported the idea that common fate increases competition via increased own-set entitativity and subsequent greed, and via increased other-set entitativity and subsequent fear. We found no consistent evidence for the possible roles of proximity and similarity.

According to interdependence theory, interpersonal situations that vary in their surface characteristics can be united by similarities in their underlying structure. Likewise, factor analytic approaches to personality combine many traits into a small number of factors. In the current research, we use interdependence theory and existing factor analyses of personality traits to measure people's lay theories about the ways traits and situations interact. We predict that traits representative of honesty–humility/virtue will be rated as more relevant to situations with non-correspondent outcomes (a gain in one person's outcomes is associated with a loss in the other person's outcomes) than to situations with correspondent outcomes (a gain in one person's outcomes is associated with a gain in the other person's outcomes). Conversely, we predict that traits representative of agreeableness will be rated as more relevant to situations with correspondent outcomes than to situations with non-correspondent outcomes. An experiment found the expected trait X situation interaction revealing that subjects expect certain types of traits to be most relevant to specific types of situations. Copyright © 2013 John Wiley & Sons, Ltd.

Two experiments investigated the effect of reward on forced compliance attitude change in relation to two supposedly crucial interactive variables. The results of these experiments indicated that previous analyses of these effects are open to serious question.

This experiment demonstrates that Greenwald’s (1969) finding that the counterattitudinal roleplayer is open-minded can best be described as a general set effect. Potential advocates (counterattitudinal and consistent attitudinal) were found to judge attitudinal sta teme nts congruently with their expected roles.

Although scholars agree that moral emotions are critical for deterring unethical and antisocial behavior, there is disagreement about how 2 prototypical moral emotions--guilt and shame--should be defined, differentiated, and measured. We addressed these issues by developing a new assessment--the Guilt and Shame Proneness scale (GASP)--that measures individual differences in the propensity to experience guilt and shame across a range of personal transgressions. The GASP contains 2 guilt subscales that assess negative behavior-evaluations and repair action tendencies following private transgressions and 2 shame subscales that assess negative self-evaluations (NSEs) and withdrawal action tendencies following publically exposed transgressions. Both guilt subscales were highly correlated with one another and negatively correlated with unethical decision making. Although both shame subscales were associated with relatively poor psychological functioning (e.g., neuroticism, personal distress, low self-esteem), they were only weakly correlated with one another, and their relationships with unethical decision making diverged. Whereas shame-NSE constrained unethical decision making, shame-withdraw did not. Our findings suggest that differentiating the tendency to make NSEs following publically exposed transgressions from the tendency to hide or withdraw from public view is critically important for understanding and measuring dispositional shame proneness. The GASP's ability to distinguish these 2 classes of responses represents an important advantage of the scale over existing assessments. Although further validation research is required, the present studies are promising in that they suggest the GASP has the potential to be an important measurement tool for detecting individuals susceptible to corruption and unethical behavior.

In Study 1, participants completed five extant shame and guilt proneness inventories based on different theoretical conceptions of the difference between shame and guilt. Factor analyses revealed that despite very different theoretical distinctions, the shame proneness subscales loaded on one factor, and the guilt proneness subscales loaded on one factor. In Study 2, we altered scale items so that hypothetical transgressions were committed in either public or private, and likelihood response options were either typical of a ‘‘shame-prone response’’ (negative self-evaluation; avoidance behavior) or a ‘‘guilt-prone response’’ (negative behavior evaluation; approach behavior). Our findings indicate that shame and guilt proneness can be measured both by responses to transgressions (e.g., negative self-evaluation and avoidance responses vs. negative behavior evaluation and approach responses) and the situational context in which the transgression occurs (e.g., public vs. private). We provide recommendations regarding optimal measurement of shame and guilt proneness.

a b s t r a c t Evidence from two experiments indicates that task-related communication promotes cooperation in mixed-motive situations by activating interpersonal norms related to fairness and trust. In Experiment 1, task-related communication increased cooperation between individuals in a three-choice prisoner's dilemma game (PDG-Alt) but task-unrelated communication did not. In Experiment 2, cooperation was increased both by sending a task-related message to one's counterpart and receiving a cooperative task-related message from one's counterpart. Mediation analyses revealed that task-related communica-tion increased cooperation by activating fairness and trust norms (Experiments 1 and 2). Specifically, whereas sending (relative to receiving) a task-related message increased cooperation by activating fair-ness norms, receiving (relative to sending) a task-related message increased cooperation by activating trust norms (Experiment 2).

Basic social psychological research has suggested several interventions to reduce intergroup conflict. Most of these interventions, however, have been indirect and impractical to implement outside laboratory settings. Although past research has demonstrated that indirect manipulations of the consideration of future consequences reduce intergroup competition, no study of interindividual–intergroup discontinuity has tested this assumption with a direct manipulation. The present study found that when participants (individuals and members of groups) interacting in an iterated prisoner's dilemma game (PDG) were asked to predict how their opponent's choice on a second trial would be affected by their own choice on an initial trial, intergroup competition was reduced while interindividual competition remained low regardless of the manipulation. On a practical level, implications of this study provide a simple and easily implemented solution to reducing intergroup conflict in non-laboratory situations. Copyright © 2009 John Wiley & Sons, Ltd.