child human 15 male 14 Humans 13 Child 11 female 11 Male 10 Article 8 Female 7 controlled study 7 Adolescent 6 adolescent 6 adult 6 preschool child 6 Child, Preschool 5 Apraxia 4 Language Development Disorders 4 Speech Disorders 4 classification 4 clinical article 4 developmental language disorder 4 dysarthria 4 motor performance 4 physiology 4 speech disorder 4 speech motor delay 4 Adult 3 Autism Spectrum Disorder 3 Down syndrome 3 United States 3