The test is used not only to measure intelligence , but as a clinical tool. Many practitioners use it to diagnose attention-deficit hyperactivity disorder (ADHD) and learning disabilities.
Understanding of learning disabilities and attentional disorders has greatly expanded since the publication of the WISC–III. WISC–IV makes important advances from WISC–III in order to provide the most effective clinical tool representing cutting edge research and thinking.
WISC–IV provides more than IQ scores. It provides essential information and critical clinical insights into a child’s cognitive functioning.
In order to make interpretation more clinical meaningful, the dual IQ and Index structure from WISC–III has been replaced with a single system of four composite scores (consistent with the Four Index Scores in WISC–III) and the Full Scale IQ. This new system helps you better understand a child’s needs in relation to contemporary theory and research in cognitive information processing.
The WISC®–IV provides four index scores: