Inferences of personal characteristics on the basis of information retrieved from one's memory.

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Abstract
Conducted 4 experiments with a total of 331 undergraduates to investigate inferences about another person's attributes (e.g., his or her political attitudes) on the basis of information (e.g., the person's voting behavior) retrieved by Ss from their own memory. The inference task required integration of 2 kinds of uncertainty: uncertainty generated by imperfect diagnosticity of the information regarding the attributes under consideration. Results show that Ss relied almost exclusively on the diagnosticity of the information retrieved. The reliability with which the information was retrieved had a small and inconsistent effect on judgment. As a result, the inferences were considerably more extreme than those justified by normative considerations. Findings are interpreted in terms of D. Kahneman and A. Tversky's (see record 1974-02325-001) "representativeness heuristic," and implications of the results with regard to overconfidence in attributing personality traits are discussed. (19 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved)

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