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A New Zero-Inflated Negative Binomial Methodology for Latent Category Identification

Published online by Cambridge University Press:  01 January 2025

Simon J. Blanchard*
Affiliation:
McDonough School of Business, Georgetown University
Wayne S. DeSarbo
Affiliation:
Department of Marketing, Pennsylvania State University
*
Requests for reprints should be sent to Simon J. Blanchard, McDonough School of Business, Georgetown University, 37th and O St. N.W., Washington, DC 20057, USA. E-mail: sjb247@georgetown.edu

Abstract

We introduce a new statistical procedure for the identification of unobserved categories that vary between individuals and in which objects may span multiple categories. This procedure can be used to analyze data from a proposed sorting task in which individuals may simultaneously assign objects to multiple piles. The results of a synthetic example and a consumer psychology study involving categories of restaurant brands illustrate how the application of the proposed methodology to the new sorting task can account for a variety of categorization phenomena including multiple category memberships and for heterogeneity through individual differences in the saliency of latent category structures.

Information

Type
Original Paper
Copyright
Copyright © 2013 The Psychometric Society

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