Intragroup social influence and intergroup competition

Three experiments examined the role of intragroup social influence in intergroup competition. In the context of a mutual fate control situation, participants in Experiment 1 demonstrated more intergroup competition in the presence than in the absence of social support for shared self-interest. Experiment 2 revealed that, in the context of a Prisoner's Dilemma Game, this social support effect was stronger when noncorrespondence of outcomes between the interacting groups was low than when it was high. Results from Experiment 3 were consistent with the possibility that the effect of social support is attenuated when noncorrespondence of outcomes is high because under these circumstances intergroup competition is prescribed by a norm of group interest. The implications of these findings for understanding the antecedents of interindividual-intergroup discontinuity are discussed.     

Is symmetry identity?

Wigner found unreasonable the "effectiveness of mathematics in the natural sciences". But if the mathematics we use to describe nature is simply a carefully coded expression of our experience then its effectiveness is quite reasonable. Its effectiveness is built into its design. We consider group theory, the logic of symmetry. We examine the premise that symmetry is identity; that group theory encodes our experience of identification. To decide whether group theory describes the world in such an elemental way we catalogue the detailed correspondence between elements of the physical world and elements of the formalism. Providing an unequivocal match between concept and mathematical statement completes the case. It makes effectiveness appear reasonable. The case that symmetry is identity is a strong one but it is not complete. The further validation required suggests that unexpected entities might be describable by the irreducible representations of group theory.     

Reduction of interindividual-intergroup discontinuity: the role of leader accountability and proneness to guilt

Two experiments contrasted interactions between group leaders with interactions between individuals in a mixed-motive setting. Consistent with the idea that being accountable to the in-group implies normative pressure to benefit the in-group, Experiment 1 found that accountable leaders were more competitive than individuals. Consistent with the idea that being unaccountable to the in-group implies normative pressure to be cooperative and that high guilt proneness provides motivation to be moral, Experiment 2 found that when guilt proneness was high, unaccountable leaders were less competitive than accountable leaders and did not differ significantly from individuals. In other words, the robust interindividual-intergroup discontinuity effect was eliminated when groups had unaccountable leaders who were high in guilt proneness.     

The effects of alignments: examining group faultlines, organizational cultures, and performance

By integrating literature on group faultlines, organizational cultures, and value congruence, this research presents a framework that explains how cultural alignment across organizational levels may influence the relationship between faultlines and performance. The hypotheses were tested using representatively sampled multisource qualitative and quantitative data on 138 teams from a Fortune 500 company. The present findings demonstrate that although informational faultlines were detrimental for group performance, the negative relationship between faultlines and performance was reversed when cultures with a strong emphasis on results were aligned, was lessened when cultures with a weak emphasis on results were aligned, and remained negative when cultures were misaligned with respect to their results orientation. These findings show the importance of recognizing alignments not only within groups (group faultlines) but also outside groups (cultural alignments between the group and departments) when considering their implications for group performance.     

The Relation of the Galvanic Skin Reflex Recovery Curve to Reactivity,Resistance Level,and Perspiration

The effect of stimulus compounding in classical conditioning was investigated by conditioning one group of rats to a compound CS consisting of a buzzer and light and then conditioning separate groups of rats to the individual elements of the compound CS. On hurdle-jump test trials, the group of Ss conditioned to the compound CS performed better than Ss conditioned to the elements of the compound. Strength of conditioning to each of the elements of the compound CS was about equal. There was some evidence of a summation effect resulting from conditioning to the compound CS. Strength of conditioning to the compound CS was somewhat greater than the sum of the response strengths conditioned to the elements of the compound CS.     

Role of emotions and behavioural responses in mediating the impact of face loss on relationship deterioration: Are Chinese more face‐sensitive than Americans?

Face loss, defined as the deterioration in one's social image, has been regarded as a consequence of interpersonal conflict and a provocation for counter-attack. The present research was aimed at assessing whether the role of face loss in leading to relationship deterioration has more impact for Chinese than for Americans. We hypothesized that the linkage from face loss to relationship deterioration is mediated by two social-emotional complexes (anger and shame) and two behavioural reactions (retaliation and avoidance) arising from interpersonal harm. Structural equation modelling confirmed this mediation model, and indicated that in both cultures, the linkage between face loss and relationship disintegration was mediated by shame and avoidance, but not by anger and retaliation. Consistent with widely held hypotheses, face loss was found to be more influential in directly provoking a target's anger and relationship deterioration, and more influential in inhibiting a target's retaliating responses, for Hong Kong Chinese than for Americans.     

The survival of a cooperative tradition in the intergroup discontinuity context

Interindividual-intergroup discontinuity is the tendency, in mixed-motive situations, for groups to interact more competitively, or less cooperatively, than individuals, even though mutual competition yields worse results that mutual cooperation. The present laboratory experiment attempted to assess whether the discontinuity effect could be reduced by the establishment of an intergroup cooperative tradition. Cooperation between intact pairs of groups was induced by placing in each group confederates who successfully convinced their fellow group members of the long-term advantage of trust and cooperation. On subsequent blocks of trails, the confederate was replaced by an actual subject, and then each of the original subjects was replaced so as to simulate generational turnover. By the time all initial members were replaced, their level of cooperation had eroded to the level of groups never experiencing mutual cooperation. The results are discussed in the context of other means of reducing discontinuity. This research was supported by National Science Foundation grants (BNS-9007414 and SBR-9408760) to John Schopler and Chester A. Insko.     

Attention deficit disorder in reading-disabled twins: Evidence for a genetic etiology

In order to assess the genetic etiology of attention deficit hyperactivity disorder (ADHD), the basic regression model for the analysis of selected twin data (DeFries & Fulker, 1985, 1988) was fitted to questionnaire data (DICA: Diagnostic Interview for Children and Adolescents; Herjanic, Campbell, & Reich, 1982) for 37 identical and 37 fraternal twin pairs tested in the Colorado Reading Project. Results of this analysis suggest that ADHD is highly heritable. Moreover, adjusting DICA scores for either IQ or reading performance differences did not substantially change parameter estimates. In future analyses of larger data sets, distinguishing between possible subtypes of attentional problems (e.g., ADD with or without hyperactivity) may facilitate tests of more searching etiological questions.This work was supported in part by program project and center grants from NICHD (HD-11681 and HD-27802) to J. C. DeFries. This report was prepared while J. Gillis was supported by NIMH training grant MH-16880, and J. Gilger was supported by a Fellowship in Developmental Psychobiology through the University of Colorado (MH-15442). B. Pennington was also supported by NIMH grants MH-38820 and MH-45916. The invaluable contributions of staff members and families who participated in the Colorado Reading Project are gratefully acknowledged. We also acknowledge the expert editorial assistance of the late Rebecca G. Miles.