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  • An Examination of the Stability and Persistence of the Köhler Motivation Gain Effect
    The current paper reports the findings of an experiment designed to investigate the persistence of motivation gains in small groups....
    Group Dyn 12:279 (2008)
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  • Psychological mechanisms underlying the Köhler motivation gain.
    Sometimes group work conditions lead to motivation gains rather than to social loafing. Two theoretical explanations for the Köhler...
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  • The Role of Competitiveness at Social Tasks: Can Indirect Cues Enhance Performance?
    Recent research has shown that competitiveness is related to performance. However, gaps remain in the literature on the effects of co...
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  • Chaos in the courtroom reconsidered: emotional bias and juror nullification.
    We propose a model of juror nullification that posits an interaction between the nature of the trial (viz. whether the fairness of t...
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  • Group performance and decision making.
    Theory and research on small group performance and decision making is reviewed. Recent trends in group performance research have fou...
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  • Satisficing in Hypothesis Generation
    Research in hypothesis generation suggests that people might act as satisficers and be less likely to generate plausible alternative...
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  • "Me versus just us versus us all" categorization and cooperation in nested social dilemmas.
    In its generic form, a social dilemma poses a conflict between private and collective interests. People are often faced, however, wi...
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  • Knowledge of partner's ability as a moderator of group motivation gains: an exploration of the Köhler discrepancy effect.
    O. Köhler (1926, 1927) found that less able performers tried harder as team members under conjunctive task demands (Kohler motivati...
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  • Satisficing in hypothesis generation.
    Research in hypothesis generation suggests that people might act as satisficers and be less likely to generate plausible alternative...
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  • Mood effects on cooperation in small groups: Does positive mood simply lead to more cooperation?
    We argue that mood affects the process of decision making rather than (or in addition to) affecting the level of cooperation, increa...
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  • Informing Jurors of Their Nullification Power: A Route to a Just Verdict or Judicial Chaos?
    The current studies sought to test whether explicitly informing jurors of their power to nullify the law does invite "chaos," defined...
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  • Defendant-Juror Similarity and Mock Juror Judgments
    It was hypothesized that juror-defendant similarity would lead to greater leniency toward a criminal defendant when the evidence agai...
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  • Sex Composition of Groups and Member Motivation III: Motivational Losses at a Feminine Task
    This study examined the effects of group sex composition on individual effort at a feminine task. A simple sewing task was used. Effo...
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  • Pretrial Publicity, Judicial Remedies, and Jury Bias
    Although past research has established pretrial publicity's potential to bias juror judgment, there has been less attention given to...
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  • Laboratory Simulation and Bias in the Study of Juror Behavior: A Methodological Note
    Theoretical speculation and meta-analysis suggest that the strength of treatment effects (e. g., defendant attractiveness) may become...
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  • Free Press and Fair Trial: The Role of Behavioral Research
    We review and critically assess the empirical social science literature as it pertains to the legal issues involving free press and...
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  • Sex Composition of Groups and Member Motivation II: Effects of Relative Task Ability
    This study examined the effects of group members' relative task ability on the relationship between group sex composition and member...
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  • After Division, Before Decision: Group Faction Size and Predeliberation Thinking
    The primary objective of this study was to examine how the knowledge that one had weak, moderate, or strong support for one's positio...
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  • Effects of Prior Juror Experience on Juror Behavior
    A psychological assumption underlying the common and legally sanctioned use of jurors with previous jury experience is that such prio...
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  • Use of the Simulation Method in the Study of Jury Behavior: Some Methodological Considerations
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