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9 - Cognitive Diagnosis Models

Published online by Cambridge University Press:  20 April 2023

F. Gregory Ashby
Affiliation:
University of California, Santa Barbara
Hans Colonius
Affiliation:
Carl V. Ossietzky Universität Oldenburg, Germany
Ehtibar N. Dzhafarov
Affiliation:
Purdue University, Indiana
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Summary

Cognitive diagnosis models originated in the field of educational measurement as a psychometric tool to provide finer-grained information more suitable for formative assessment. Typically,but not necessarily, these models classify examinees as masters or nonmasters on a set of binary attributes. This chapter aims to provide a general overview of the original models and the extensions, and methodological developments, that have been made in the last decade. The main topics covered in this chapter include model estimation, Q-matrix specification, model fit evaluation, and procedures for gathering validity and reliability evidences. The chapter ends with a discussion of future trends in the field.

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Chapter
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Publisher: Cambridge University Press
Print publication year: 2023

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