Behavioral and Brain Sciences



Short Communication

Empirical dissociations between rule-based and similarity-based categorization


Gregory Ashby a1 and Michael B. Casale a1
a1 Department of Psychology, University of California, Santa Barbara, CA 93106 ashby@psych.ucsb.edu casale@psych.ucsb.edu http://www.psych.ucsb.edu/%7Eashby/index.htm

Abstract

The target article postulates that rule-based and similarity-based categorization are best described by a unitary process. A number of recent empirical dissociations between rule-based and similarity-based categorization severely challenge this view. Collectively, these new results provide strong evidence that these two types of category learning are mediated by separate systems.