Dopamine and Sensorimotor Function in Stuttering

This study is being done to understand the effect of aripiprazole on adults who stutter. Stuttering is a disorder that affects speech fluency. This study aims to understand sensorimotor pathways of stuttering and possible interventions.

Inclusion Criteria: * native speakers of American English * for adults who stutter, presence of stuttering will be confirmed, with onset before age 6 years * Normal hearing * Ages of 18 to 65 years * healthy adults without hearing-language difficulties Exclusion Criteria: * self-reported speech-language-hearing difficulties other than stuttering * self-reported neurological or psychological problems * other medications (drugs that affect dopaminergic system and/or benzodiazepines)