Cattell–Horn–Carroll Theory of Intelligence

The Cattell–Horn–Carroll (CHC) theory of intelligence is a psychometric taxonomy designed to explain how and why individuals differ in cognitive ability. It provides a common frame of reference and nomenclature to organize cognitive ability research. Its name comes from integrating Raymond Cattell and John Horn’s subsequent occurrence theory with John Carroll’s three-stratum theory, both of which are largely driven by factor analysis of psychometric measures of cognitive ability. This entry first looks at the historical antecedents of CHC theory, the development and purpose of the theory, and criticisms of the theory.


Although CHC theory can trace its heritage to the work of Francis Galton, Charles Spearman, Cyril Burt, Philip Vernon, and L. L. Thurstone, it largely begins with Raymond Cattell. Cattell studied with Spearman in ...

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