After middle childhood, IQ scores usually change very little from year to year with a small, gradual increase occurring until what age and a small slow decline thereafter?
A)20 years
B)30 years
C)40 years
D)60 years

Question

Quizplus · Accepted Answer

IQ scores typically show a small, gradual increase until around the age of 40, after which there is a slow decline.

After Middle Childhood, IQ Scores Usually Change Very Little from Year