On average, the IQ scores of fraternal twins correlate with each other more highly than do the IQ scores of identical twins.

Question

Quizplus · Accepted Answer

This statement is false. The IQ scores of identical twins show greater correlation than fraternal twins. This indicates a genetic influence on intelligence, as identical twins share all of their genes and fraternal twins share only 50% of their genes on average.

On Average, the IQ Scores of Fraternal Twins Correlate with Each