Unlike early intelligence tests (such as the Stanford-Binet), which focused heavily on verbal abilities and speed, David Wechsler argued that intelligence is not a single, monolithic entity. He defined intelligence as "the global capacity of the individual to act purposefully, to think rationally, and to deal effectively with his environment."
Gauges the speed and accuracy of visual-motor coordination via Symbol Search Test Wais Iv
, which represents overall intellectual ability. This composite score is derived from four critical index scores [1, 8]: Verbal Comprehension Index (VCI): to think rationally
WAIS–IV - Wechsler Adult Intelligence Scale | Fourth Edition Test Wais Iv
Usually takes between 60 and 90 minutes for the core subtests.