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  • By: Lara A. Ray & Kelly E. Courtney
  • In: Encyclopedia of the Mind
  • Edited by: Harold Pashler
  • Subject:Linguistics (general), Cognitive Psychology (general)

Addiction is a chronic and relapsing disorder marked by persistent substance use despite a host of negative consequences. The U.S. Drug Enforcement Administration's Controlled Substances Act (CSA) identifies five classes of drugs: narcotics, depressants, stimulants, ...