What would you expect to find if you correlated the IQ scores of fraternal and identical twins, if the differences in IQ scores among people were entirely a result of genetic factors?

Question

Quizplus · Accepted Answer

Identical twins share 100% of their genes, while fraternal twins share only 50% of their genes. If the differences in IQ scores among people were entirely a result of genetic factors, then we would expect to find equal correlations for identical twins reared together and for identical twins reared apart. This is because the genetic factors that contribute to IQ scores would be the same in both cases.

What Would You Expect to Find If You Correlated the IQ