article controlled study human 14 Humans 11 phonetics 10 Phonetics 9 female 9 human experiment 9 male 9 speech 8 Speech Perception 7 adult 7 speech perception 7 Speech 6 language 6 physiology 6 Language 5 Female 4 Male 4 clinical article 4 vowel 4 Adult 3 Learning 3 attention 3 consonant 3 infant 3 language development 3 learning 3 newborn 3 nonhuman 3