The lowest correlation in intelligence scores is likely to occur between
A) a brother and sister raised together.
B) a biological parent and child living together.
C) a biological parent and child living apart.
D) two sisters raised apart.
E) identical twins raised apart.

Question

Quizplus · Accepted Answer

Identical twins raised apart have the lowest correlation in intelligence scores because they share 100% of their genes but have been raised in different environments. This means that their intelligence scores are more likely to be influenced by their environment than by their genes.

The Lowest Correlation in Intelligence Scores Is Likely to Occur