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Age related changes in intelligence are best explained by

  • A.Cattell's theory
  • B.Jensen's theory
  • C.Sternberg's theory
  • D.Guilford's theory

Answer: A

Age related changes in intelligence are best explained by Cattell's theory of fluid and crystallised intelligence. Fluid intelligence, the ability to reason in new situations, peaks in early adulthood and declines, while crystallised intelligence, knowledge and skills gained by experience, goes on increasing through much of life.

Jensen's theory deals with levels I and II and heredity, Sternberg's with triarchic components, and Guilford's with the structure of intellect, so none of them is mainly about change with age.

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