Major Movements in Psychology

Intelligence Testing

What does mental age mean?

Alfred Binet (1857–1911), a French psychologist, furthered the work of Galton and Cattell with his concept of mental age. While observing his own children develop new cognitive skills as they grew, Binet recognized that intelligence could be measured developmentally. By comparing the test performance of a child with the age at which such performance was expected, he could calculate a mental age for each child.


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