Cognitive load and person memory: the role of perceived group variability

Two studies investigated the effects of cognitive busyness and group variab ility on participants' memory for stereotype-related information, In Study 1, participants formed an impression of an experimentally created group tha t was either homogeneous or heterogeneous in composition. While learning ab out the group, half of the participants were made cognitively busy, the oth ers were not. The results supported our prediction that stereotypical effor ts on memory are moderated by both the availability of processing resources and the variability of the target group under consideration. Under optimal processing circumstances, participants' recollections were dominated by th e perceived variability of the group in question. That is, participants dis played preferential recall for stereotype-consistent information when they believed the group to be homogeneous in composition, but a tendency to reca ll more stereotype-inconsistent information when they considered the group to be heterogeneous in nature, Under suboptimal processing conditions, howe ver, a different pattern emerged. Now, participants preferentially recalled stereotype-consistent information regardless of the perceived variability of the group. These results were largely replicated in Study 2 when the per ceived variability of a real social group was manipulated. We consider the implications of these findings for contemporary theories of stereotyping. ( C) 1999 John Wiley & Sons, Ltd.