son (1) groupe social (1) traitement (1) évolution (1) discours (1) Development (1) Language (1) Implements (1) Article (1) Communication (1) Forms (1) Tools (1) Speech (1) Sound (1) Life (1) Infants (1) Grammar, Comparative and general--Article (1) Gesture (1) Functions (1) Facial expression (1) Face (1) Evolution (1) Communication (1) Beginning (1) Article (1) Vocalization (1) Evolution (1) Processing (1)