Literaturnachweis - Detailanzeige
| Autor/in | Ackerman, Terry |
|---|---|
| Titel | Graphical Representation of Multidimensional Item Response Theory Analyses. |
| Quelle | (1994), (38 Seiten)
PDF als Volltext kostenfreie Datei |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Monographie |
| Schlagwörter | Ability; Achievement Tests; Educational Assessment; Item Response Theory; Measurement Techniques; Scores; Test Items; Test Use |
| Abstract | The purpose of this paper is to demonstrate how graphical analyses can enhance the interpretation and understanding of multidimensional item-response theory (IRT) analyses. Conceptually many of the unidimensional IRT concepts such as item characteristic curves, information, etc., can be extended to multiple dimensions. However, as the dimensionality increases, new problems and issues arise, most notably how to represent these conceptual features within a multidimensional framework. This paper provides examples of different graphical representations including item-response surfaces, information vectors, and centroid plots of conditional two-dimensional ability distributions given the number-correct score. All of these are intended to supplement quantitative and substantive analyses and thereby help the testing practitioner determine more precisely what a test is measuring, the degree of the measurement precision, and the consistency of the assessment process. Fifteen figures illustrate the analyses. (Contains 13 references.) (Author/SLD) |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
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