child human 1,196 male 1,196 female 1,149 Humans 991 Child 881 Male 867 Female 840 adolescent 639 Adolescent 528 adult 469 Article 441 preschool child 422 controlled study 418 major clinical study 395 Child, Preschool 362 Adult 314 article 313 psychology 254 young adult 248 Young Adult 228 human experiment 196 infant 185 physiology 176 clinical article 170 procedures 168 school child 167 middle aged 159 child parent relation 153 Middle Aged 144