Researchers have correlated the IQ scores of adopted children with those of their biological parents and their adoptive parents. Between which groups is the highest correlation is found?
A) between infants and their biological parents
B) between infants and their adoptive parents
C) between teenagers and their biological parents
D) between teenagers and their adoptive parents

Question

Quizplus · Accepted Answer

The highest correlation in IQ scores is found between teenagers and their biological parents, as genetic factors have a greater impact on intelligence than environmental factors at this point in development.

Researchers Have Correlated the IQ Scores of Adopted Children with Those