The Wechsler Preschool and Primary Scale of Intelligence
The Wechsler Preschool and Primary Scale of Intelligence third edition by David
Wechsler was published in 2002. The test is published by The Psychological Corporation in San
The scoring key was revised however; the date is not given as to when it was. The
norms for this test are from a sample dated from July 2001 to April 2002. There are two different
sets of times to administer this test, which are based on age. Ages 2:6 to 3:11 require 30-35
minutes to complete the test and ages 4 to 7:3 require 40 to 50 minutes. The cost of this test is
$1,259.00, included in this fee one receives an examiner manual, technical manual, 25 record
forms for ages 2:6-3:11, 25 record forms for ages 4-7:3, 25 response booklets, and the scoring
Purpose and Nature of Test
The WPPSI-III is an intelligence test designed to assess the intelligence of children aged
2 years 6 months through 7 years 3 months. The test is divided among the two age bands (2:6-
3:11, 4:0-7:3). Ages 2:6-3:11 have four core subtests, the core Verbal subtests are Receptive
Vocabulary and Information; the core Performance subtests consists of Block Design and Object
Assembly. Four composite scores are possible for this age band: VIQ, PIQ, PSQ, FSIQ, and
GLC. For ages 4:0-7:3 there are seven-core subtest. There are three Verbal, three Performance,
and one Processing Speed. The Verbal consists of Information, Vocabulary, and Word Reasoning.
Performance consists of Block Design, Matrix Reasoning, and Picture Concepts. Processing
Speed consists of Coding. There are five composite scores for this age band: VIQ, PIQ, PSQ,
FSIQ, and GLC.
The Information subtest has 34 items, consisting of 6 picture items and 28 verbal items.
For picture items, the child is asked a question then the child chooses an answer by pointing to a