Humans 6 Language Learning female 6 human 6 language 6 learning 6 male 6 phonetics 6 Phonetics 5 article 5 human experiment 5 adult 4 language development 4 speech perception 4 Adult 3 Infant 3 Language Development 3 Speech Perception 3 controlled study 3 infant 3 vowel 3 Multilingualism 2 Speech 2 Speech production 2 awareness 2 child 2 clinical article 2 multilingualism 2 speech 2