Most healthy adults begin to demonstrate some decline in fluid intelligence during their 60s and 70s, but crystallized intelligence either remains stable or actually increases until well into the 70s.

Question

Quizplus · Accepted Answer

Fluid intelligence, which involves problem-solving and reasoning, tends to decline with age, while crystallized intelligence, which involves accumulated knowledge and skills, often remains stable or increases as people age.

Most Healthy Adults Begin to Demonstrate Some Decline in Fluid