As an alternative to algebraic and schematic models of social judgment, a new exemplar-based model holds that representations of specific individuals influence judgments about persons and groups. (1) As the perceiver encounters or thinks about an individual, a representation of that exemplar as interpreted by the perceiver is stored in memory. (2) When a target person is encountered later, known attributes of similar exemplars from memory influence judgments about the target. Similarity is modulated by the perceiver's attention to stimulus dimensions. (3) Social and motivational factors, including perceiver self-schemas, social context, and ingroup-outgroup dynamics, influence social judgment by affecting perceivers' attention to dimensions. Computer simulations show how the model accounts for social influences on exemplar access and use, and therefore on the content of social judgments.