child human 95 female 83 child development 81 Humans 80 male 80 Child 67 Female 64 Male 64 Child Development 63 preschool child 51 physiology 45 Child, Preschool 42 Article 33 adolescent 33 major clinical study 33 article 32 human experiment 26 Adolescent 25 adult 25 psychology 24 controlled study 21 infant 20 Adult 18 child behavior 17 child parent relation 17 longitudinal study 16 school child 16 Infant 14 Longitudinal Studies 14