Suppose you conducted a study of pairs of identical twins, one of whom was diagnosed with ADHD. Now you examine whether or not the other twins in each pair also have ADHD. In comparison to pairs of unrelated children, you would expect that the other twin in your study would be _______ likely to also be diagnosed with ADHD.
A) much less
B) somewhat less
C) equally
D) more
Name: __________________________
Chapter 8 - Middle Childhood: Physical and Cognitive Development -

Question

Quizplus · Accepted Answer

Identical twins share 100% of their genetic material, so if one twin has ADHD, there is a higher likelihood that the other twin will also have ADHD compared to pairs of unrelated children. Research suggests that genetic factors contribute to ADHD, and the heritability of the disorder is estimated to be around 70-80%. Therefore, the other twin in each pair would be more likely to also be diagnosed with ADHD.

Suppose You Conducted a Study of Pairs of Identical Twins