An intelligence test for young children: the WPPSI-IV
The Wechsler Preschool and Primary Scale of Intelligence IV
The Wppsi is the intelligence test for young children (2 years and 6 months to 7 years and 3 months old), which has the highest scientific validity. It provides an IQ score, Verbal and Performance IQ scores, a Processing Speed Quotient and a General Language Composite. Although it can be used for 7 years and 3 months old children, it often seems preferable to use the intelligence test for older children and adolescents (the Wisc-IV) from 6 years old. It is a more complete test, and allows to answer more precisely to questions related to the child's possible intellectual giftedness. The intelligence test for adults (from 16 years old) is the Wais-IV.
Completion time is often around an hour, an hour and fifteen minutes. It is sometimes preferable for the youngest children to complete the Wppsi-IV during two sessions, so that the child does not get tired or distracted.