This study reports an analysis of item bias on Form L and Form M of the 1981 revision of the Peabody Picture Vocabulary Test for 2100 black and white children using a newly developed method of detection employing partial correlations. Few occasions of bias occurred for either form under this method, and none occurred under an ANOVA method also employed. The partial correlation index of bias was concluded to be a computationally simpler, more convenient, and generally superior index of item bias.
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