child human 168 Humans 148 female 135 male 132 Child 125 Male 90 Female 88 preschool child 77 language 69 Child, Preschool 67 article 63 language development 61 human experiment 60 adult 54 adolescent 48 Language 45 Adult 40 Adolescent 39 Article 39 controlled study 39 Language Development 38 physiology 38 infant 36 speech 35 major clinical study 32 vocabulary 30 psychology 28 Infant 27 developmental language disorder 24