Adult Humans 50 Language adult 50 human 50 language 48 female 44 male 43 Male 36 Female 35 human experiment 23 Young Adult 22 young adult 22 article 21 physiology 19 learning 16 Learning 13 Middle Aged 13 Speech Perception 13 child 13 middle aged 13 speech perception 13 Adolescent 12 Child 12 adolescent 12 speech 12 Phonetics 10 Speech 10 phonetics 10 Linguistics 9