Knowledge of drug names determines associations to drug names more than habits for the drugs.
D000328:Adult; D006556:Heroin Dependence; D006801:Humans; D013287:Illicit Drugs; D008297:Male; D004364:Pharmaceutical Preparations; D009626:Terminology as Topic; D014936:Word Association Tests
D013287:Illicit Drugs; D004364:Pharmaceutical Preparations