Which of the following statements is true regarding relationship and IQ scores?

Question

Quizplus · Accepted Answer

Identical twins share the same genetic makeup, so they are likely to have similar IQ scores regardless of whether they are raised together or apart. However, research has shown that the correlation between IQ scores is stronger for identical twins raised together compared to those raised apart because they share not only genes but also environmental experiences. Adopted children, on the other hand, are not genetically related to their adoptive parents, so their IQ scores are not likely to be very similar. Non-identical siblings' IQ scores may still be somewhat similar due to shared environmental experiences, but the correlation is not as strong as with identical twins.

Which of the Following Statements Is True Regarding Relationship and IQ