Infant human 307 infant 306 Humans 304 female 237 male 206 Female 205 child 184 preschool child 179 Child, Preschool 177 Male 174 Child 157 adult 107 adolescent 96 Article 95 Adolescent 94 Adult 94 newborn 87 Infant, Newborn 83 controlled study 78 major clinical study 59 young adult 58 Young Adult 54 article 53 psychology 48 procedures 46 child parent relation 39 physiology 39 language development 36 retrospective study 36