The correlation between the intelligence test scores of identical twins who have never met is about the same as the correlation between intelligence test scores of:
A)fraternal twins who have never met.
B)fraternal twins reared together.
C)parents and biological children living together.
D)a person who has taken the test twice.

Question

Quizplus · Accepted Answer

The correlation between identical twins' intelligence scores is very high, even if they have never met, similar to the correlation when a person takes the same test twice, due to the consistency of the test.

The Correlation Between the Intelligence Test Scores of Identical Twins