A Comparison of Three Correlational Procedures for Factor-Analyzing Dichotomously-Scored Item Response Data
Description:
In this study, an improved correlational procedure for factor-analyzing dichotomously-scored item response data is described and tested. The procedure involves (a) replacing the dichotomous input values with continuous probability values obtained through Rasch analysis; (b) calculating interitem product-moment correlations among the probabilities; and (c) subjecting the correlations to unweighted least-squares factor analysis. Two simulated data sets and an empirical data set (Kentucky Comprehe…
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Date:
May 1991
Creator:
Fluke, Ricky