Which set of siblings would we expect to have the MOST similar IQ scores?
A)Brad and Chad,ages 9 and 10,who live in the same house
B)Ellie and Kelly,ages 9 and 10,who live apart
C)Ned and Fred,ages 13 and 8,who live apart
D)Annie and Fannie,ages 13 and 8,who live in the same house

Question

Quizplus · Accepted Answer

Siblings who live in the same environment (house) and are close in age, like Brad and Chad, are expected to have the most similar IQ scores due to shared genetics and environmental factors.

Which Set of Siblings Would We Expect to Have the MOST