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Mental Age

Mental age is a central concept in the study of intelligence measurement. Jerome Sattler defined mental age as “the degree of general mental ability possessed by the average child of a chronological age corresponding to the MA score” (p. 172). As an example, a child assessed with a mental age of 9 is viewed as having the general mental ability of an average 9-year-old child.

From the perspective of intelligence measurement, each individual has two ages: a chronological age that is the number of years that the individual has been alive, and a mental age that is the chronological age of persons for which the test performance of the individual is the average test performance.

The mental age and the chronological age of an individual need not ...

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