Define "psychoactive substance" and give examples of the different categories of psychoactive drugs. Discuss whether these drugs are psychologically or physiologically addictive
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Psychoactive substances alter mood, behavior, or both.
Depressants result in behavioral sedation and can induce relaxation. They include alcohol (ethyl alcohol) and the sedative, hypnotic, and anxiolytic drugs in the families of barbiturates (for example, Seconal) and benzodiazepines (for example, Valium, Xanax). Depressants are physiologically addictive.
Stimulants cause us to be more active and alert and can elevate mood. Included in this group are amphetamines, cocaine, nicotine, and caffeine. Stimulants can be physiologically and psychologically addictive.
Opiates produce analgesia temporarily (reduce pain) and euphoria. Heroin, opium, codeine, and morphine are included in this group. Opiates are physiologically and psychologically addictive.
Hallucinogens alter sensory perception and can produce delusions, paranoia, and hallucinations. Marijuana and LSD are included in this category. Hallucinogens are not physiologically addictive but are psychologically addictive.
Other substances that are abused but do not fit neatly into one of the categories here include inhalants (for example, airplane glue), anabolic steroids, and other over-the-counter and prescription medications (for example, nitrous oxide). These substances produce a variety of psychoactive effects that are characteristic of the substances described in the previous categories.
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