Since the first review of the Wechsler Intelligence Scale for Children (WISC)I by Littell (1960), the use of this test has expanded greatly. The validity of the WISC is no longer in question; indeed it has become the standard by which the newer measures are evaluated. Focus now centers on the types of factors, external and internal, that affect obtained test results. The role of examiner variables, examining variables, situational variables, the use of the test as a diagnostic tool for specific groups, and the feasibility of abbreviating the scale have dominated the literature.Because of this change, the organization of this review is expanded over Littell's original presentation, a reflection of altered research trends. The general burgeoning of publications necessitates a bibliographic coverage that is selective rather than exhaustive. Generally, the foreign language literature is omitted, with emphasis placed on the WISC as a clinical and/or intellectual measurement tool in English-speaking countries.'The abbreviation WISC will be used throughout to indicate the Wechsler