We hypothesized that, by default, perceivers work to defend their social beliefs when counter-stereotypic information is encountered. This process was expected to be circumvented when perceivers (a) adopt an accuracy orientation, or (b) lack the cognitive resources required for protecting their stereotypic beliefs. We examined this issue by manipulating perceivers’ motivation and attentional capacity. Participants formed impressions of several targets displaying stereotype-consistent, -inconsistent, or -irrelevant behavior. Stereotypicality of participants’ subsequent group perceptions was assessed via trait ratings. As predicted, following exposure to counterstereotypic information, participants maintained relatively greater levels of stereotyping when accuracy motivation was low and processing resources were high. We conclude that although perceivers are typically motivated to defend their stereotypes, this process is effortful and can be disrupted by the imposition of a cognitive load or superseded by the induction of accuracy motivation.