Multidimensional Item Response Theory
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.
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Reckase, M. D. (2009). Multidimensional Item Response Theory. Springer. · DOI 10.1007/978-0-387-89976-3
- Ackerman, T. A., Gierl, M. J., & Walker, C. M. (2003). Using multidimensional item response theory to evaluate educational and psychological tests. Educational Measurement: Issues and Practice, 22(3), 37–51. · DOI 10.1111/j.1745-3992.2003.tb00136.x
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