addiction addictions adolescent adolescentpsychology behaviormodification behaviortherapy child cognitivetherapy cognitivetherapyforteenagers criminology jeunesendifficulté juveniledelinquency juvenileoffenders modificationducomportement polytoxicomanie problemyouth psychiatry psychology psychopathology psychotherapy rehabilitation servicesocialauxjeunesdélinquants socialwork socialworkwithjuveniledelinquents substance-relateddisorders substanceabuse substanceuse therapy thérapiecognitivepouradolescents traitement treatment