article human 99 infant 91 female 89 male 76 Humans 72 human experiment 55 Infant 53 child 51 Female 45 adult 40 Male 37 controlled study 37 major clinical study 34 preschool child 34 Child, Preschool 32 newborn 30 Infant, Newborn 27 Child 24 language development 24 language 22 Language Development 21 Adult 19 physiology 19 speech perception 18 Speech Perception 17 adolescent 15 learning 15 clinical article 14 Adolescent 12