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A Dynamic Model of Group Performance: Considering the Group Members’ Capacity to Learn

A dynamic model of group performance is suggested that combines the group learning approach and the combination of contributions approach. Three hypotheses are tested in two experiments, comparing individual training conditions with mixed group and individual training conditions on subsequent nominal and collective group performance of rule induction tasks under identical time constraints. As predicted, collective group performance improves as a function of group experience, nominal group performance improves as a function of improved individual resources for performing the task individually, and group experience reduces process losses by improving individuals’ ability to collaborate efficiently. Several experiments from the literature that address issues of group learning are analyzed in the light of the propositions made in the dynamic model. Overall, theoretical and experimental approaches to investigating group learning phenomena are discussed.