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Direct linkHornback, Joseph E. – ProQuest LLC, 2013
This dissertation addresses two research questions: 1. Do states misrepresent their progress on their own state assessments? 2. If states do distort their progress, are their predictors to suggest why this distortion occurs? The first research question requires that distortion be defined. For the purposes of this dissertation I calculated the…
Descriptors: Standardized Tests, State Standards, Computation, Equations (Mathematics)
Peer reviewed
Download full textZhang, Jinming – ETS Research Report Series, 2004
This paper extends the theory of conditional covariances to polytomous items. It has been mathematically proven that under some mild conditions, commonly assumed in the analysis of response data, the conditional covariance of two items, dichotomously or polytomously scored, is positive if the two items are dimensionally homogeneous and negative…
Descriptors: Test Items, Test Theory, Correlation, National Competency Tests
