Test Review: Wechsler, D. (2002). The Wechsler Preschool and Primary Scale of Intelligence, Third Edition (WPPSI-III). San Antonio, TX: The Psychological Corporation

There have also been major changes at the subtest level. Seven new subtests have been added. Many of these were created to update the WPPSI’s theoretical foundations. One goal in this update was to better assess fluid reasoning abilities. To this end, the Picture Concepts, Matrix Reasoning, and Word Reasoning subtests were created. A second goal of the update was to measure processing speed abilities in preschoolers similar to the WISC-111 (Wechsler, 1991) and the WATS-I11 (Wechsler, 1997). Modified versions of the Coding and Symbol Search subtests from the WISC-111 were created for preschoolers in the older age band. Two other subtests, Receptive Vocabulary and Picture Naming, were added to better assess language skills.