The Wechsler Preschool and Primary Scale of Intelligence (WPPSI™) is a widely used measure of cognitive ability in young children. Developed by David Wechsler in 1967, the WPPSI is an individually administered intelligence test designed to measure cognitive abilities in children ages 2 years 6 months to 7 years 7 months. It is composed of two age-based subtests: the Verbal Scale and the Performance Scale. The Verbal Scale assesses language and reasoning abilities, while the Performance Scale assesses perceptual reasoning and visual-motor skills. The WPPSI is used by a variety of professionals, including psychologists, pediatricians, special education teachers, and developmental specialists (Wechsler, 1967).
The WPPSI is a reliable tool for assessing cognitive abilities in young children. It is highly reliable and valid, with internal consistency coefficients ranging from .87 to .95 for the Verbal Scale and .80 to .90 for the Performance Scale (Wechsler, 1967). Furthermore, the WPPSI has been shown to be sensitive to changes in cognitive status over time (Kaufman & Kaufman, 1990).
The WPPSI has been widely adopted as a measure of cognitive ability in young children. It is used in clinical settings to assess cognitive abilities in children with developmental delays, learning disabilities, or other mental health issues (Wechsler, 1967; Kaufman & Kaufman, 1990). It is also used in research settings, as it provides an efficient and accurate measure of cognitive abilities in young children (Wechsler, 1967; Kaufman & Kaufman, 1990).
In conclusion, the WPPSI is a reliable and valid measure of cognitive abilities in young children. It is widely used in clinical and research settings and is sensitive to changes in cognitive status over time.
References
Kaufman, A. S., & Kaufman, N. L. (1990). Kaufman Assessment Battery for Children. Circle Pines, MN: American Guidance Service.
Wechsler, D. (1967). Wechsler Preschool and Primary Scale of Intelligence. New York, NY: Psychological Corporation.