Teenagers (2) puits (1) établissement scolaire (1) association (1) modèle (1) séparation des masses (physique) (1) cycle de la vie (1) inventaire (environnement) (1) analyse (1) famille (1) évaluation (1) âge (1) Development (1) Instruments (1) Indexes (1) School failure (1) Social groups (1) Portuguese (1) Parents (1) Manufacturers' agents (1) Indexes (1) Howe family (1) Hand (1) Gifts (1) Families (1) Example (1) Evidence (1) Evaluation (1) Deviant behavior (1) Commission merchants (1)