Measures of Intelligence

Critical Thinking Questions

Why do you think different theorists have defined intelligence in different ways?


Since cognitive processes are complex, ascertaining them in a measurable way is challenging. Researchers have taken different approaches to define intelligence in an attempt to comprehensively describe and measure it.

Compare and contrast the benefits of the Stanford-Binet IQ test and Wechsler’s IQ tests.


The Wechsler-Bellevue IQ test combined a series of subtests that tested verbal and nonverbal skills into a single IQ test in order to get a reliable, descriptive score of intelligence. While the Stanford-Binet test was normed and standardized, it focused more on verbal skills than variations in other cognitive processes.