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Motivation gains in performance groups: paradigmatic and theoretical developments on the Köhler effect
G Hertel1, N L Kerr, L A Messé
1University of Kiel, Institut für Psychologie, Germany. hertel@psychologie.uni-kiel.de
Journal of Personality and Social Psychology
|October 25, 2000
Summary
Group motivation gains, known as the Köhler effect, were replicated in a new study. This effect, where teams outperform individual efforts, occurs under specific task demands, suggesting contribution instrumentality over social comparison.
Area of Science:
- Psychology
- Social Psychology
- Organizational Behavior
Background:
- Social loafing, where individuals exert less effort in groups, is well-documented.
- Group motivation gains, or the Köhler effect, are less understood.
- Köhler's (1926, 1927) research indicated team performance gains, especially with capability discrepancies.
Purpose of the Study:
- To replicate Köhler's motivation gain effect in a controlled setting.
- To investigate the moderating role of coworker capability discrepancies on motivation gains.
- To differentiate between social comparison and contribution instrumentality as explanations for the Köhler effect.
Main Methods:
- Experiment 1: Developed a paradigm to replicate the Köhler effect, analyzing motivation gains and the impact of capability discrepancies.
- Experiment 2: Examined motivation gains under conjunctive versus additive task demands.
- Statistical analysis to account for artifacts and isolate key findings.
Main Results:
- The Köhler effect was replicated.
- Coworker capability discrepancies did not significantly moderate motivation gains after accounting for statistical artifacts.
- Motivation gains were observed under conjunctive task demands but not under additive task demands.
Conclusions:
- The Köhler effect can be reliably demonstrated.
- Contribution instrumentality, rather than social comparison, is a more plausible explanation for the Köhler effect.
- Task demands significantly influence the occurrence of group motivation gains.
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