2009j-102 2011j-827 adolescence adolescent adolescentpsychotherapy adolescents aggressivenessinchildren angerinchildren anxietydisorders anxietyinadolescence anxietyinchildren asperger'ssyndrome child childhood childmentalhealthservices childpsychotherapy clinicalchildpsychology cognitievetherapie cognitivebehavioraltherapy cognitivetherapy cognitivetherapyforteenagers constructivism(psychology) enfants fear fearinchildren inadolescence ininfancy mentaldisorders methods oppositionaldefiantdisorderinchildren psychologieclinique psychothérapie therapy thérapiecognitivepouradolescents thérapiecognitivepourenfants treatment