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Direct linkSun, Shan-Shan; Tao, Jian; Chang, Hua-Hua; Shi, Ning-Zhong – Applied Psychological Measurement, 2012
For mixed-type tests composed of dichotomous and polytomous items, polytomous items often yield more information than dichotomous items. To reflect the difference between the two types of items and to improve the precision of ability estimation, an adaptive weighted maximum-a-posteriori (WMAP) estimation is proposed. To evaluate the performance of…
Descriptors: Monte Carlo Methods, Computation, Item Response Theory, Weighted Scores
