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Aggregate Item Response Analysis

Published online by Cambridge University Press:  01 January 2025

Gordon G. Bechtel*
Affiliation:
University of Florida
Chezy Ofir
Affiliation:
The Hebrew University of Jerusalem
*
Requests for reprints should be sent to Gordon G. Bechtel, Marketing Department, University of Florida, Gainesville, FL 32611.

Abstract

A stochastic postulate is given for the multiple-item, successive-intervals scaling of populations. The logistic equivalent of this postulate provides an aggregate item response model in which a unidimensional submodel may be nested. This reduction provides a subtractive conjoint measurement of several items and stimuli on the same latent scale. Generalized-least-squares methods are used to estimate and test the multiple-item model, and its unidimensional reduction, on aggregate survey responses. The entire procedure is illustrated with an analysis of semantic-differential attitude data. This analysis exhibits an item selection procedure that is applicable to various social constructs.

Information

Type
Original Paper
Copyright
Copyright © 1988 The Psychometric Society

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