ERIC Number: EJ779839
Record Type: Journal
Publication Date: 2007
Reference Count: 50
Skills Diagnosis Using IRT-Based Latent Class Models
Roussos, Louis A.; Templin, Jonathan L.; Henson, Robert A.
Journal of Educational Measurement, v44 n4 p293-311 Win 2007
This article describes a latent trait approach to skills diagnosis based on a particular variety of latent class models that employ item response functions (IRFs) as in typical item response theory (IRT) models. To enable and encourage comparisons with other approaches, this description is provided in terms of the main components of any psychometric approach: the ability model and the IRF structure; review of research on estimation, model checking, reliability, validity, equating, and scoring; and a brief review of real data applications. In this manner the article demonstrates that this approach to skills diagnosis has built a strong initial foundation of research and resources available to potential users. The outlook for future research and applications is discussed with special emphasis on a call for pilot studies and concomitant increased validity research.
Descriptors: Validity, Identification, Psychometrics, Item Response Theory, Models, Skill Development
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Authoring Institution: N/A