Among the following, which have the highest positive correlation between their IQs?
A)parents and children
B)grandparents and grandchildren
C)siblings of the same sex raised together
D)identical twins raised apart

Question

Quizplus · Accepted Answer

Identical twins, even when raised apart, share the same genetic makeup, which plays a significant role in determining IQ. This genetic similarity results in a higher correlation of IQ scores between them compared to other familial relationships that share fewer genes or environmental influences.

Among the Following, Which Have the Highest Positive Correlation Between