How many exemplars are used? Explorations with the Rex Leopold I model.

Full Abstract

The goal of this research is to test the hypothesis that a category is not necessarily represented by all observed exemplars, but by a reduced subset of these exemplars. To test this hypothesis, we made use of a study reported by Nosofsky, Clark, and Shin (1989), and replicated their Experiment 1 in order to gather individual-participant data. Both a full exemplar model and a reduced exemplar model were fit to the data. In general, the fits of the reduced exemplar model were superior to those of the full exemplar model. The results suggest that only a subset of exemplars may be sufficient for category representation.

Author information

Author/s: De Schryver, Maarten (M); Vandist, Katleen (K); Rosseel, Yves (Y);

Affiliation: Ghent University, Ghent, Belgium. maarten.deschryver(-atsign-)ugent.be

Journal and publication information

Publication Type: Journal Article

Journal: Psychonomic bulletin & review (Psychon Bull Rev), published in United States. (Language: eng)

Reference: 2009-Apr; vol 16 (issue 2) : pp 337-43

Dates: Created 2009/03/18; Completed 2009/06/11;

PMID: 19293104, status: MEDLINE (last retrieval date: 6/11/2009, IMS Date: 11 Jun 2009 00:00:00)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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