Drugs and Consciousness 10. Discuss the nature of drug dependence and identify some common misconceptions about addiction. Psychoactive drugs are chemicals that change perceptions and moods. Continued use of a psychoactive drug produces tolerance, and cessation of use may produce the undesirable side effects of withdrawal. The pain of withdrawal and intense craving for a dose indicates a physical dependence. People can also develop psychological dependence, particularly for drugs used to relieve stress. Many drug researchers believe the following three myths about addiction are false: (1) Medical drugs, for example, those used to control pain, are powerfully addictive; (2) addictions cannot be overcome voluntarily but only through treatment; and (3) we can extend the concept of addiction to cover a whole spectrum of repetitive, pleasure-seeking behaviors such as overeating, exercise, gambling, sex, and surfing the Internet. 1. Describe the physiological and psychological effects of depressants, stimulants, and
This is the end of the preview. Sign up
access the rest of the document.