A Comparison of Preschool Children\u27s Performance on the Kaufman-Assessment Battery for Children Nonverbal Scale and the Wechsler Preschool and Primary Scale of Intelligence Performance Scale

The relationship between the Kaufman Assessment Battery for Children (K-ABC) Nonverbal Scale and the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) Performance Scale was examined for a sample of 48 preschool age children. The children were grouped according to their level of language development. One group consisted of normal children with no language delays. The second group was composed of children who exhibited mild to moderate language delays. The third group included children who were essentially nonverbal. Subjects were administered the K-ABC Nonverbal Scale and the WPPSI Performance Scale in a counter-balanced order. The scores were then analyzed to determine if there were any significant relationships or differences between the two measures or the three groups. Pearson product-moment correlations between the K-ABC Nonverbal Scale and the WPPSI Performance Scale ranged from. 59 for the language delayed group to. 79 for the entire sample. A significant difference was found between the obtained means of the instruments, with subjects receiving higher scores on the WPPSI Performance Scale. Implications of these findings are discussed in terms of assessing young language-delayed children