The authors examined reading times of attitude statements made by group members as a function of consistency of statements with stereotypic expectancies (between-member) and consistency of statements with other statements from the same member (within-member). Stereotype-inconsistent statements were studied longer than consistent statements only when the target group was an outgroup or when subjects were instructed to focus on the group as a whole. Results suggested that the out-group was perceived as a single homogeneous whole regardless of experimental instructions. Inconsistencies within individual group members instigated the longest reading times. This effect was stronger for inconsistencies within out-group members than within in-group members, suggesting that subjects not only expected more within-group variability in in-groups than in out-groups, but they also expected more within-person variability.
No takes yet. Share an insight, caveat, or question.
Vonk et al. (1995) studied this question.