Genfold2: A General Unfolding Methodology for the Analysis of Preference/Dominance Data

Advances in Psychology, Volume 60 New Developments in Psychological Choice Modeling, Pages 57–75

19 Pages Posted: 27 May 2016

See all articles by Wayne S. DeSarbo

Wayne S. DeSarbo

Pennsylvania State University

Vithala R. Rao

Cornell University - Samuel Curtis Johnson Graduate School of Management

Date Written: 1988

Abstract

This paper is a brief description of the GENFOLD2 methodology which is a set of multidimensional unfolding models and algorithms for the analysis of preference or dominance data (cf. DeSarbo & Rao, 1984, 1986). GENFOLD2 allows one to perform internal or external analyses, constrained or unconstrained analyses, conditional or unconditional analyses, metric or nonmetric analyses, as well as providing the flexibility of specifying and/or testing a variety of different types of unfolding-type preference models including simple, weighted, and general unfolding analysis. An alternating least-squares algorithm is utilized in the estimation of the specified parameters. The methodology is illustrated in this paper with a set of preference data for over-the-counter pain relievers. Some future research directions are also identified.

Suggested Citation

DeSarbo, Wayne S. and Rao, Vithala R., Genfold2: A General Unfolding Methodology for the Analysis of Preference/Dominance Data (1988). Advances in Psychology, Volume 60 New Developments in Psychological Choice Modeling, Pages 57–75, Available at SSRN: https://ssrn.com/abstract=2784891

Wayne S. DeSarbo (Contact Author)

Pennsylvania State University ( email )

University Park
State College, PA 16802
United States

Vithala R. Rao

Cornell University - Samuel Curtis Johnson Graduate School of Management ( email )

Ithaca, NY 14853
United States

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