"Psychoactive" describes substances that can affect a person's mood, consciousness, perceptions, thinking, and/or behaviors primarily as a result of their effects on the central nervous system.

Extreme, irrational fears of objects and situations, such as hypodermic needles and public speaking are examples of _____

A) compulsions B) biases C) drives D) phobias

Drug therapeutic communities are most often run by __________

a. Certified Drug Abuse Counselors b. ex-addicts c. clinical psychologists d. M.D.s