configuration, and prior ability distribution on the accuracy of ability estimation given various IRT models. Item response data on … ability. The accuracy of the ability estimation for a given IRT model was assessed by the recovery rate and the root mean … estimation than the other three polytomous models. The nominal categories model performed better than the general partial credit …

cross-nationally. Typically, researchers have relied upon the tenets of classical measurement theory (CT) using confirmatory …-national applicability? Our research seeks to address these issues and the cross-national measurement applicability of multi … demonstrate the usefulness of GT to cross-national multi-dimensional measurement. …