Literaturnachweis - Detailanzeige
| Autor/in | De Champlain, Andre F. |
|---|---|
| Titel | An Overview of Nonlinear Factor Analysis and Its Relationship to Item Response Theory. Statistical Report. LSAC Research Report Series. |
| Quelle | (1999), (23 Seiten)
PDF als Volltext kostenfreie Datei |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Monographie |
| Schlagwörter | College Entrance Examinations; Estimation (Mathematics); Factor Analysis; Item Response Theory; Law Schools; Models; Law School Admission Test |
| Abstract | This paper provides a brief overview of some of the research that has examined the relationship between item response theory (IRT) and nonlinear factor analysis (NFA), and outlines three NLFA models, emphasizing their major strengths and weaknesses for practical applications. The focus is on: (1) R. McDonald's polynomial approximation of a normal ogive model (1967, 1982); (2) A. Christoffersson's (1975) and B. Muthen's (1984) factor analytic model for dichotomous variables; and (3) the full information factor analytic model (R. Bock and M. Aitken, 1981; R. Bock, R. Gibbons, and E. Muraki, 1988). Items from two Law School Admission Test (LSAT) forms were calibrated using these three models to assess the degree of comparability of the IRT parameter estimates using these procedures. Findings show that the parameter estimates tended to be quite similar, regardless of the calibration procedure. Additional research should be conducted with a larger number of LSAT forms before reaching any conclusions about the comparability of the calibration procedures. (Contains 2 tables, 2 figures, and 55 references.) (Author/SLD) |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
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