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The Wechsler Intelligence Scale for Children® (WISC®-IV) is an IQ test that is administered to children ages 6 to 16. Often, the WISC®-IV is used to identify key cognitive strengths and weaknesses related to giftedness and academic admissions. The WISC® test is administered one-on-one by a psychologist. The length of time it takes to complete is typically 60 to 90 minutes, but the time varies depending on the age and stamina of the child.
WISC®-IV is divided into 15 subtests. Each subtest score is combined to yield a Full Scale IQ (FSIQ) which ranges from lowest 40 to highest 160 points.
Questions within each subtest of the WISC® test get progressively more difficult as the test is administered. After the child misses three to four questions in a row incorrectly, the psychologist will move on to the next subtest. Essentially, the IQ score is determined by how far they get within each subtest before missing three questions in a row.
The 15 subtests WISC®-IV are grouped into four categories: Verbal, Perceptual, Working Memory and Processing Speed: