The objective of this article is to develop baseline models showing principal approaches to category learning. All models are based on a common memory array but vary in memory access and decision processes useful for interpretation of empirical phenomena. The main models discussed are exemplar, prototype, and feature. (JAZ)

A formal theory of human understanding was developed and embodied in a computer program, UNDERSTAND, which simulates the understanding processes. Due to the number of alternative processing choices, some assumptions were made which are analyzed based on their validity. (Author/DEP)

Empirical parallels between repetition priming (RP) and automaticity predicted by the instance theory were studied in 4 experiments with a total of 196 introductory psychology students. RP was viewed as the first few steps toward automaticity. Characteristics RP shares with automaticity, beyond a general speed-up with practice, are discussed. (SLD)

This examination of retrieval interference in memory theories argues that relevant world knowledge can reduce interference by integrating factors learned about a concept. Three recognition experiments were conducted and two hypotheses were considered to account for the results: human associative memory and script analysis. (Author/RD)