It is based on one of the most broad standardization samples ever, WAIS–III scales have been co-normed with the new Wechsler Memory Scale—Third Edition (WMS–III) to help you look at the important relationship between intellectual functioning and memory. One of the chief goals of the WAIS was to develop new norms on an existing sample. In addition to being current, the standards also reflect an expanded age range for adults 74 through 89 years of age, reflecting the increased average life expectancy. Group/Individual: (Description) The Wechsler Adult Intelligence Scale (WAIS) consists of eleven subtests. Sources: http://www.writingjunction.com/iq-scores/