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ERIC Number: EJ829207
Record Type: Journal
Publication Date: 2007-Aug
Pages: 14
Abstractor: ERIC
Reference Count: 0
ISSN: ISSN-1536-6367
The Role of Psychometric Modeling in Test Validation: An Application of Multidimensional Item Response Theory
Schilling, Stephen G.
Measurement: Interdisciplinary Research and Perspectives, v5 n2-3 p93-106 Aug 2007
In this paper the author examines the role of item response theory (IRT), particularly multidimensional item response theory (MIRT) in test validation from a validity argument perspective. The author provides justification for several structural assumptions and interpretations, taking care to describe the role he believes they should play in any interpretive argument. Then the author shows how MIRT methods using full-information item factor analysis (Bock & Aitken, 1981; Bock, Gibbons, & Muraki, 1988; Schilling and Bock, 2005), multi-dimensional item difficulties Reckase, 1985), and validity sectors (Ackerman, 1994) can be used to establish essentially unidimensional scales corresponding to the theoretical structure of the test domain. The author then applies these methods to assess the three components of MKT (Mathematical Knowledge for Teaching). Finally, he discusses the implications of his findings for his theory of MKT and for psychometric theory generally. (Contains 5 tables and 3 figures.)
Psychology Press. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A