Identical twins reared together and apart tend to score very similarly on standardized measures of intelligence.Which of the following statements does this finding support?
A)Intelligence levels are based on environmental factors for both twins reared together and twins reared apart.
B)Environmental factors are stronger influences on twins raised together compared to twins reared apart.
C)The "intelligence gene" is identical in both twins reared together and reared apart.
D)Genes are an important source of individual variations in intelligence test scores.

Question

Quizplus · Accepted Answer

The finding that identical twins reared together and apart tend to score very similarly on standardized measures of intelligence supports the idea that genes are an important source of individual variations in intelligence test scores. This is because identical twins share 100% of their genes, and therefore any similarities in their intelligence test scores must be largely due to genetic factors rather than environmental ones.

Identical Twins Reared Together and Apart Tend to Score Very