Researchers who have examined the IQ scores of adopted children have found
A) a high correlation between the children's scores and the scores of their adoptive parents.
B) a high correlation between the children's scores and the scores of their birth parents.
C) modest correlations between the children's scores and the scores of adoptive parents, and modest correlations between the children's scores and the scores of birth parents.
D) almost no correlation between the children's scores and the scores of their adoptive parents.

Question

Quizplus · Accepted Answer

Research has shown that there are modest correlations between the IQ scores of adopted children and both their adoptive and birth parents. This suggests that both genetic and environmental factors play a role in IQ. However, it's worth noting that genetics tends to be a stronger predictor of IQ than environment.

Researchers Who Have Examined the IQ Scores of Adopted Children