Testlet Response Theory
Testlet response theory (TRT) extends item response theory to tests built from testlets — bundles of items sharing a common stimulus, such as several questions about one reading passage. Standard IRT assumes items are conditionally independent given ability, but items within a testlet violate this because they draw on the same passage. TRT adds a testlet-specific random effect that absorbs this local dependence, preventing the overstated precision and biased parameters that result from ignoring it. Developed by Wainer, Bradlow, and Wang, it is widely used wherever passage-based or scenario-based items appear.
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Vyanzo
- Wainer, H., Bradlow, E. T., & Wang, X. (2007). Testlet Response Theory and Its Applications. Cambridge University Press. ISBN: 9780521681261
- Bradlow, E. T., Wainer, H., & Wang, X. (1999). A Bayesian random effects model for testlets. Psychometrika, 64(2), 153–168. DOI: 10.1007/BF02294533 ↗
Jinsi ya kunukuu ukurasa huu
ScholarGate. (2026, June 22). Testlet Response Theory for Item Bundles with Local Dependence. ScholarGate. https://scholargate.app/sw/education/testlet-response-theory
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- Mifumo Iliyopangwa ya KibayesiyaniMbinu za Bayes↔ linganisha
- Nadharia ya Itikio la Kipengee (IRT)Saikometriki↔ linganisha
- Multidimensional Item Response TheoryEducation↔ linganisha
- Standardized Test AnalysisEducation↔ linganisha
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