List and briefly describe the four major categories of psychoactive drugs
What will be an ideal response?
Answer: A good answer will include the following key points.
? Most psychoactive drugs can be classified as stimulants, depressants, opiates, and psychedelics.
? Stimulants such as amphetamines, cocaine, nicotine, and caffeine speed up activity in the central nervous system.
? Depressants such as alcohol, tranquilizers, and barbiturates slow down activity in the central nervous system.
? Opiates such as opium, heroin, morphine, and methadone cause relief from pain and euphoria.
? Psychedelics such as LSD, mescaline, and psilocybin disrupt normal thought processes and sometimes produce hallucinations.
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