WAIS IQ Test (Wechsler Adult Intelligence Scale-Third Edition)
David Wechsler pioneer of psychometric testingThe Wechsler Adult Intelligence Scale (WAIS IQ Test) (first published in 1955), originated in a revision of the Wechsler-Bellevue IQ test (1939), itself a battery of tests composed from subtests Wechsler conscripted from Yerkes' Army Tests (Yerkes, 1921). The WAIS IQ test measures general intelligence, which Wechsler defined as "The global capacity of a person to act purposefully, to think rationally, and to deal effectively with his/her environment."

WAIS IQ Test Composition Summary: Fourteen subtests -- seven verbal (Information, Comprehension, Arithmetic, Similarities, Vocabulary, Digit Span, and Letter-Number Sequencing), and seven performance (Digit Symbol-Coding, Picture Completion, Block Design, Matrix Reasoning, Picture Arrangement, Symbol