373 adolescence adolescentboys adolescentpsychology aspectéconomique autobiography biography competency-basededucation computerliteracy computers computerscience dataprocessing economicaspects education education(secondary) educationalchange enseignement etiquette family garçonsadolescents general greatbritain hardware highschoolteaching informationtechnology informatique japan japanese lifestages machinetheory mannersandcustoms masculinity masculinité nationalcharacteristics nonfiction orientationprofessionnelle psychologie psychology reference relationships réforme secondary secondaryeducation sexualbehavior sexualité sociallifeandcustoms studyandteaching(secondary) teenageboys teenagers vocationalguidance voortgezetonderwijs youth éducationbaséesurlacompétence étudeetenseignement(secondaire)