Psychology: Chapter 10 Terms

Intelligence Quotient (IQ)

Developed by William Stern; originally defined as the ratio of mental age to chronological age. IQ = (MA / CA) x 100

Alfred Binet

- Binet and Theodore Simon developed "Binet-Simon Intelligence Scale" in 1905. - They developed a test to identify children who required special attention during education. - The Binet-Simon scale expressed a child's score in terms of "mental age".

standard deviation

A measure of the spread of the sample from the mean.

chronological age (CA)

A child's actual age.

mental age (MA)

A child's _ indicated that he or she displayed the mental ability typical of a child of that chronological (actual) age.

Deviation IQ

Compares people of the same age and assumes that IQ is normally distributed, that the average (mean) is 100 and that the standard deviation is something like 15. It is a measure of how far someone deviates from the average IQ of 100.

David Wechsler

He developed tests of intelligence for preschool children, school-age children, and adults. The Wechsler scales introduced the concept of the deviation IQ.

Stanford-Binet Test

Lewis Terman adapted this test for American use, adding many items of his own and establishing criteria, or norms, for comparing an individual's scores with those of the general population.

individual test

Stanford-Binet intelligence Scale (1916)

group test

The Army Alpha Test (verbal test) The Army Beta Test (nonverbal test)