Which test is described as the most widely used intelligence test with verbal and performance subtests?

• A. Stanford-Binet
• B. IQ test
• C. Wechsler scale
• D. Wechsler Adult Intelligence Scale (WAIS)

Answer: (D)

The test you’re describing is built around measuring adult intelligence with distinct verbal and nonverbal (performance) abilities and then combining those into a full overall score. The Wechsler Adult Intelligence Scale was designed specifically for adults and became the standard because it provides clear verbal and performance subtests that tap different cognitive domains, along with a comprehensive full-scale IQ. Its structure— Verbal Comprehension and Reasoning, Perceptual/Nonverbal problem solving, Working Memory, and Processing Speed—gives reliable, normed scores across a wide range of ages and settings. This combination of targeted verbal and nonverbal assessment, solid reliability and validity, and extensive normative data is why the WAIS is the most widely used intelligence test for adults.