Studies comparing identical and fraternal twins reveal that __________.
A) identical twins have more highly correlated intelligence scores
B) identical twins are generally better in verbal tasks than fraternal twins
C) identical twins have higher IQ scores than fraternal twins
D) both groups have equally highly correlated intelligence scores

Question

Quizplus · Accepted Answer

Studies comparing identical and fraternal twins have consistently found that identical twins have more highly correlated intelligence scores than fraternal twins, indicating that genetics plays a stronger role in intelligence than environmental factors.

Studies Comparing Identical and Fraternal Twins Reveal That __________