Brain and Behavior

Brain Development

What is the difference between crystallized and fluid intelligence?

Psychologists make a distinction between crystallized intelligence, which remains stable into old age, and fluid intelligence, which reduces with age. Crystallized intelligence involves verbal skills, conceptual skills, and fund of knowledge. Fluid intelligence involves immediate information processing skills, such as the speed at which information is processed, the amount of information that can be processed at a time, and the ability to commit new information to memory.


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