If the differences in IQ scores among people were entirely a result of environmental factors, you would expect to find that the correlation in IQ scores would be
A) the same for identical twins reared together and for identical twins reared apart.
B) higher for fraternal twins reared together than for identical twins reared apart.
C) lower for identical twins reared together than for identical twins reared apart.
D) higher for identical twins reared apart than for fraternal twins reared together.

Question

Quizplus · Accepted Answer

If IQ differences were entirely due to environmental factors, fraternal twins reared together would have a higher correlation in IQ scores than identical twins reared apart, as the shared environment would play a larger role than genetic similarity.

If the Differences in IQ Scores Among People Were Entirely