Predictive validity of two short-forms of the WPPSI: a 3-year follow-up study

An equally weighted WPPSI short-form (Comprehension, Arithmetic, Block Design, and Picture Completion) was administered to 64 prekindergarten children, while a verbally weighted WPPSI short-form (Comprehension, Arithmetic, Block Design, and Vocabulary) was administered to 63 prekindergarten children. All subjects subsequently were administered school achievement tests at the end of the first- and second-grade years. Low, but significant correlations between the FSIQ and achievement test scores were obtained; the Arithmetic and Block Design subtests were the best subtest predictors of school achievement in grades one and two. The predictive validities of the two WPPSI short-forms were found to be essentially equivalent.