human 1,180 child 1,019 Humans 968 female 869 male 841 Child 795 Female 615 Male 599 preschool child 459 Child, Preschool 410 adolescent 405 Article 347 adult 339 Adolescent 328 controlled study 302 major clinical study 279 article 259 Adult 230 psychology 226 Children 205 infant 196 physiology 174 Infant 156 human experiment 156 child parent relation 153 Education 148 questionnaire 145 procedures 130 cross-sectional study 129 young adult 124