stuttering Humans 20 human 20 Stuttering 18 Article 15 female 15 male 15 speech 14 Speech 10 adult 10 Female 8 Male 8 Adult 7 controlled study 7 speech analysis 7 Child, Preschool 6 child 6 clinical article 6 disease severity 6 pathophysiology 6 preschool child 6 Child 5 Speech Production Measurement 5 aged 4 fluency disorder 4 language 4 major clinical study 4 physiology 4 self report 4 speech therapy 4