If neurotransmitters are linked to depression, which of the following would be LEAST likely to be observed in a study?
A) Lower levels of certain neurotransmitters in people who are depressed compared with those who are not depressed
B) An increase in depressive symptoms after a person take a drug that blocks the effects of certain neurotransmitters
C) A decrease in depressive symptoms once certain neurotransmitter levels in people with depression have been restored
D) A near-zero correlation between certain neurotransmitter levels and the number or severity of depressive symptoms a person reports

Question

Quizplus · Accepted Answer

A near-zero correlation between neurotransmitter levels and depressive symptoms would be least likely if neurotransmitters are indeed linked to depression. This is because a significant link would suggest that changes in neurotransmitter levels should correlate with changes in depressive symptoms, either positively or negatively.

If Neurotransmitters Are Linked to Depression, Which of the Following