Addiction is a condition in which the body must have a drug to avoid physical and psychological withdrawal symptoms. Addiction’s first stage is dependence, during which the search for a drug dominates an individual’s life. An addict eventually develops tolerance, which forces the person to consume larger and larger doses of the drug to get the same effect.
Adapted from the Encyclopedia of Psychology
What You Can Do
Understanding How People Change is First Step in Changing Unhealthy Behavior
Stages-of-change research has been used to develop dozens of behavior change programs, including HIV prevention, to help people live longer, healthier lives.
Research on Addiction
Breaking free from addiction
Learn more about effective behavioral and pharmaceutical therapies to treat addiction.
Cell phone addiction rings true for teen psychologist
High school senior Michelle Hackman won a $75,000 college scholarship with a project on cell-phone addiction.
Fighting food addiction
Yale University graduate student Ashley Gearhardt has found connections between substance abuse and food cravings, and is pioneering a new field along the way.
Treating drug abuse
As deaths from heroin increase, psychologists are exploring what kind of treatment works best.
Speaking of Psychology: Women and smoking
In this podcast, expert Sherry McKee, PhD, explores why women have a harder time quitting smoking than men.
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