In research looking at the biological causes of mood disorders, studies have shown that if one of a set of twins is unipolar, the probability that the other twin is unipolar is ___________ percent.
a. 20
b. 40
c. 60
d. 80
Question 2
Which of the following statements is accurate regarding the relationship between anxiety and depression?
a. Almost all depressed patients are anxious, but not every anxious patient is depressed.
b. Cognitive content (thinking) is more negative in anxious patients than in those with depression.
c. A core symptom of anxiety is the inability to experience pleasure.
d. Anxiety is often preceded by an episode of major depression.