Age (2) Âge (2) Development (1) Sensitive plant (1) Teenagers (1) Self-perception (1) Public domain (1) Months (1) Longitudinal method (1) Land tenure (1) Newborn infants (1) Infants (1) Hypothesis (1) Government property (1) Girls (1) Gender (Musical instrument) (1) Gaze (1) Face (1) Expression (1) Boys (1) Belief and doubt (1) Adolescence (1) Management (1) Sexual behavior (1) Sex differences (1) Relations (1) Infancy (1) Diferencias entre los sexos (1) Niñas (1) Costumbres sexuales (1)