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Cultural Consensus Theory for the Ordinal Data Case

Published online by Cambridge University Press:  01 January 2025

Royce Anders*
Affiliation:
University of California, Irvine
William H. Batchelder
Affiliation:
University of California, Irvine
*
Requests for reprints should be sent to Royce Anders, University of California, Irvine, USA. E-mail: andersr@uci.edu

Abstract

A Cultural Consensus Theory approach for ordinal data is developed, leading to a new model for ordered polytomous data. The model introduces a novel way of measuring response biases and also measures consensus item values, a consensus response scale, item difficulty, and informant knowledge. The model is extended as a finite mixture model to fit both simulated and real multicultural data, in which subgroups of informants have different sets of consensus item values. The extension is thus a form of model-based clustering for ordinal data. The hierarchical Bayesian framework is utilized for inference, and two posterior predictive checks are developed to verify the central assumptions of the model.

Information

Type
Original Paper
Copyright
Copyright © 2013 The Psychometric Society

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