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Multicomponent Latent Trait Models for Ability Tests

Published online by Cambridge University Press:  01 January 2025

Susan E. Whitely*
Affiliation:
University of Kansas
*
Requests for reprints should be sent to Susan E. Whitely, Psychology Department, University of Kansas, Lawrence, Kansas 66045.

Abstract

A major research direction for ability measurement has been to identify the information-processes that are involved in solving test items through mathematical modeling of item difficulty. However, this research has had limited impact on ability measurement, since person parameters are not included in the process models. The current paper presents some multicomponent latent trait models for reproducing test performance from both item and person parameters on processing components. Components are identified from item subtasks, in which performance is a logistic function (i.e., Rasch model) of person and item parameters, and then are combined according to a mathematical model of processing on the composite item.

Information

Type
Original Paper
Copyright
Copyright © 1980 The Psychometric Society

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