Citation

Ashby FG, Maddox WT. J. Exp. Psychol. Hum. Percept. Perform. 1990; 16(3): 598-612.

Affiliation

Department of Psychology, University of California, Santa Barbara 93106.

Copyright

(Copyright © 1990, American Psychological Association)

DOI

unavailable

PMID

2144574

Abstract

This article examines decision processes in the perception and categorization of stimuli composed of the separable psychological dimensions, orientation and size. The randomization technique (Ashby & Gott, 1988) of general recognition theory, which allows accurate estimation of a subject's decision boundary in a categorization task, is used in 4 experiments. Even though the stimulus components are clearly separable, it was found that ubjects were not constrained to use separable response strategies, nor were they constrained to attend to distance to the prototypes. Instead, they used decision rules that were nearly optimal, even if this required information integration or for the Ss to attend to higher level category properties such as component correlation.

Language: en