The Wechsler Preschool and Primary Scale of Intelligence, 3rd edition, is an intelligence test designed for children ages 2.6 years to 7.3 years. It has last been revised in 2002. It measures intellectual functioning in verbal and performance cognitive domains, as well as it provides a score that represents a child’s general intellectual ability. The WPPSI-III is administered by the EC2 Clinical Psychologist.
The WPPSI-III has 14 subtests, some examples:
- Block design, the child uses one- or two-color blocks to re-create a block design;
- Information, the child responds to a question by choosing a picture from 4 response options;
- Matrix reasoning, the child chooses the missing portion of an incomplete matrix from 4 or 5 response options;
- Receptive vocabulary, the child looks at a group of 4 pictures and points to the one the examiner names aloud.
- Similarities, the child completes a sentence by providing a response that reflects a shared characteristic.
The Wechsler Intelligence Scale for Children, 4th edition, is an individually administered intelligence test for children between the ages of 6-17, that can be completed without reading or writing. It generates and IQ score which represents a child’s general cognitive ability.
The WISC-IV is divided into 15 subtests, checking for example:
- Vocabulary, examinee is asked to define a provided word;
- Similarities, asking how two words are alike;
- Comprehension, questions about social situations or common concepts;
- Information, general knowledge questions;
- Digit span, repeating a given sequence of numbers, either as heard or in reverse order;
- Picture concepts, determining which pictures go together.
The WISC-IV is administered by a psychologist and can help to diagnose ADHD and learning disabilities.