When does crystallised intelligence peak?

Question

Quizplus · Accepted Answer

Crystallized intelligence refers to the ability to use knowledge and experience that has been acquired over time. This type of intelligence continues to develop throughout life, but research suggests that it tends to peak sometime during middle adulthood, typically in the 40s or 50s. After this point, the rate of decline in crystallized intelligence is typically slower than the decline in fluid intelligence, which refers to the ability to reason and solve new problems.

When Does Crystallised Intelligence Peak