Series of intelligence tests.

A widely used series of intelligence tests developed by clinical psychologist David Wechsler. Their most distinctive feature is their division into a verbal section and a nonverbal (or "performance") section, with separate scores available for each one. Verbal intelligence, the component most often associated with academic success, implies the ability to think in abstract terms using either words or mathematical symbols. Performance intelligence suggests the ability to perceive relationships and fit separate parts together logically into a whole. The inclusion of the performance section in the Wechsler scales is especially helpful in assessing the cognitive ability of non-native speakers and children with speech and language disorders. The test can be of particular value to school psychologists screening for specific learning disabilities because of the number of specific subtests that make up each section. The Wechsler Preschool and Primary Scales of...