effet (2) éducation (2) science économique (2) Education (2) Education (2) Economics (2) puits (1) spectacle (1) recherche (1) modèle (1) âge (1) enfant (1) abords (agglomération) (1) profession (1) Children (1) Rich people (1) States (1) Single-sex schools (1) Peer pressure (1) Social networks (1) Students (1) Struggle (1) Research (1) Race (1) Proxy (1) Play (1) Parents (1) Manufacturers' agents (1) Life (1) Income distribution (1)