1. , and (1950) The Authoritarian Personality, Harper, New York.
2. (1987). ‘The instability of grader structure: Implications for the nature of concepts.’ In: (Ed.) Concepts and Conceptual Development: Ecological and Intellectual Factors in Categorization, Cambridge University Press, Cambridge.
3. (1989). ‘Intraconcept similarity and its implications for interconcept similarity’. In: and (Eds) Similarity and Analogical Reasoning, Cambridge University Press, Cambridge.
4. (1988). ‘A dual process model of impression formation’. In: and (Eds) Advances in Social Cognition, Vol. 1, Erlbaum, Hillsdale, NJ, pp. 1–36.
5. Perceptions of the elderly: Stereotypes as prototypes.