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| Multidimensional Item Response Theory× | Cognitive Diagnostic Modeling× | |
|---|---|---|
| Fachgebiet | Education | Education |
| Familie | Latent structure | Latent structure |
| Entstehungsjahr≠ | 2009 | 2010 |
| Urheber≠ | Mark Reckase; foundations in factor analysis of items (Bock, McDonald) | Tatsuoka; DiBello, Roussos & Stout; Junker & Sijtsma; de la Torre |
| Typ≠ | Item response model with multiple latent ability dimensions | Restricted latent class models for diagnosing mastery of discrete skills |
| Wegweisende Quelle≠ | Reckase, M. D. (2009). Multidimensional Item Response Theory. Springer. DOI ↗ | Rupp, A. A., Templin, J., & Henson, R. A. (2010). Diagnostic Measurement: Theory, Methods, and Applications. Guilford Press. ISBN: 9781606235270 |
| Aliasnamen≠ | MIRT, Multidimensional IRT, Compensatory MIRT, Bifactor IRT | CDM, Diagnostic Classification Models, DCM, DINA / G-DINA Models |
| Verwandt | 4 | 4 |
| Zusammenfassung≠ | Multidimensional item response theory (MIRT) generalizes IRT to tests that measure more than one latent ability at once. Instead of a single ability θ, each examinee is characterized by a vector of abilities, and each item by a vector of discriminations indicating how strongly it taps each dimension. MIRT unites the logic of item response theory with the structure of factor analysis, letting analysts model, for example, that a word-problem item draws on both reading and mathematics. Synthesized in Reckase's authoritative treatment, it underlies the analysis of complex, multi-skill assessments. | Cognitive diagnostic models (CDMs), also called diagnostic classification models, are restricted latent class models that report not a single ability score but a profile of which discrete skills or attributes a student has mastered. Each item is linked to the attributes it requires through a Q-matrix, and the model classifies every examinee into one of the possible binary mastery patterns. CDMs answer 'which specific skills does this student lack' rather than 'how much overall ability does this student have,' making them central to fine-grained diagnostic and formative assessment. |
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