AP PSYCHOLOGY

Detailed explanation-1: -Your cognitive abilities would level off at around middle age, and then start to gradually decline. We now know this is not true. Instead, scientists now see the brain as continuously changing and developing across the entire life span. There is no period in life when the brain and its functions just hold steady.

Detailed explanation-2: -Scientists have long known that our ability to think quickly and recall information, also known as fluid intelligence, peaks around age 20 and then begins a slow decline.

Detailed explanation-3: -Crystallized intelligence continues to grow throughout adulthood. Many aspects of fluid intelligence peak in adolescence and begin to decline progressively beginning around age 30 or 40.

Detailed explanation-4: -Cognitive aging is a complex phenomenon, which comprises various cognitive skills, broadly categorized into fluid and crystallized intelligence. Crystallized intelligence (gc) tends to be maintained, as opposed to fluid intelligence (gf), which tends to decline rapidly with age.