As measured by IQ tests, overall, age-related losses are small for most healthy, well-educated individuals because
A) IQ is an innate ability that does not change as one ages.
B) the test items on the IQ tests are only timed for young people and not for people over 40.
C) older people make up for their losses in explicit intelligence with their implicit intelligence.
D) IQ tests assess for components of both fluid intelligence and crystallized intelligence.

Question

As measured by IQ tests, overall, age-related losses are small for most healthy, well-educated individuals because
A) ​IQ is an innate ability that does not change as one ages.
B) the ​test items on the IQ tests are only timed for young people and not for people over 40.
C) ​older people make up for their losses in explicit intelligence with their implicit intelligence.
D) ​IQ tests assess for components of both fluid intelligence and crystallized intelligence.

Quizplus · Accepted Answer

IQ tests assess for components of both fluid intelligence (the ability to solve novel problems) and crystallized intelligence (knowledge and skills acquired through experience), and studies have shown that although fluid intelligence declines with age, crystallized intelligence tends to remain stable or even increase. This is why age-related losses in overall IQ scores are generally small for healthy, well-educated individuals who have accumulated a lot of knowledge and experience over their lifetimes.

As Measured by IQ Tests, Overall, Age-Related Losses Are Small