Which of the following conclusions can be made about the etiology of anxiety disorders?

a) Regarding biochemical theories, strong evidence suggests serotonin plays a role in regulating emotion.
b) From a psychodynamic perspective, anxiety disorders may develop as a result of direct conditioning, observational learning, or information transfer.
c) Twin and family studies suggest that specific anxiety disorders are inherited and likely unavoidable.
d) Psychoanalytic interpretations are coming back into favor.

Ans: a) Regarding biochemical theories, strong evidence suggests serotonin plays a role in regulating emotion.