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Dong, Hei-Ki; And Others – 1983
This paper examines the sample-free test calibration claim, derived from Rasch's structural model for test items, by comparing item difficulty and log ability estimates between different samples of ability levels. Three tests from the Ball Aptitude Battery--Inductive Reasoning, Paper Folding; and Vocabulary--were administered to three samples of…
Descriptors: Ability, Age Differences, Aptitude Tests, Difficulty Level
