Sadie is depressed. You would be most likely to find that
A) Sadie's identical twin is depressed.
B) Sadie's adoptive mother is depressed.
C) Sadie's brother is depressed.
D) no one else in Sadie's family is depressed.

Question

Quizplus · Accepted Answer

The fact that Sadie is depressed and the clue given is that her identical twin is also depressed strongly suggests that genetics and inherited traits play a role in her depression. Studies have shown that identical twins have a higher concordance rate for depression than fraternal twins, suggesting a genetic component to depression. Adoptive mothers and siblings may not share the same genes as Sadie, so they are less likely to be good indicators of the potential genetic influence on Sadie's depression.

Sadie Is Depressed