Which of the following is true concerning "twin study" research findings?
A)Identical twins and fraternal twins share similarly high IQ correlations.
B)Fraternal twins have more similar IQ scores than identical twins.
C)Identical twins have more similar IQ scores than fraternal twins.
D)Identical twins raised together have less similar scores than identical twins raised apart.

Question

Quizplus · Accepted Answer

Twin study research consistently shows that identical twins have more similar IQ scores than fraternal twins. This suggests a genetic component to intelligence, as identical twins share 100% of their genes while fraternal twins share only 50%. This pattern holds true even when twins are raised separately, indicating that genetic factors play a powerful role in determining intelligence.

Which of the Following Is True Concerning "Twin Study" Research