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Download full textYan, Jean W. – 1997
Context-dependent items are traditionally analyzed independently, creating a situation in which the potential local item dependence effects among these items may cause a biased estimation of examinees' abilities. This study investigated the local item dependence effects on testlets in the tryout version of a statewide science assessment by a Rasch…
Descriptors: Ability, Cluster Analysis, Goodness of Fit, Item Response Theory
