title: Evaluation of a stuttering treatment based on reduction of short phonation intervals.
abstract: This paper reports the results of an efficacy study of a stuttering treatment program known as Modifying Phonation Intervals (MPI), which trains stuttering speakers to reduce the frequency of relatively short phonation intervals (PIs) during connected speech across speaking tasks and situations. Five young adult male stuttering speakers were treated in this computer-based program that systematically trains speakers to reduce selected short PIs found to functionally control stuttering. The treatment process was evaluated using multiple-baseline designs. Treatment was largely self-managed and based on a performance-contingent schedule of within-clinic speaking tasks (Establishment), beyond-clinic speaking tasks (Transfer), and systematic decreases in assessment occasions (Maintenance). Assessments were made at regular intervals before, during, and after treatment. All speakers achieved stutter-free and natural-sounding speech during within- and beyond-clinic speaking tasks at the completion of Maintenance. All were tested 12 months after completion of Maintenance, and all maintained the results. The findings from this study suggest that this procedure may make a significant contribution to stuttering treatment practice.
authors.affiliation: Department of Speech and Hearing Sciences, University of California, Santa Barbara 93106, USA. rjingham@speech.ucsb.edu
authors.forename: R J
authors.initials: RJ
authors.lastname: Ingham
authors.forename: M
authors.initials: M
authors.lastname: Kilgo
authors.forename: J C
authors.initials: JC
authors.lastname: Ingham
authors.forename: R
authors.initials: R
authors.lastname: Moglia
authors.forename: H
authors.initials: H
authors.lastname: Belknap
authors.forename: T
authors.initials: T
authors.lastname: Sanchez
mesh_terms: D000293:Adolescent; D000328:Adult; D006801:Humans; D008297:Male; D015588:Observer Variation; D010700:Phonetics; D013068:Speech Production Measurement; D013070:Speech Therapy / Q000379:methods*; D013342:Stuttering / Q000188:drug therapy / Q000453:epidemiology / Q000628:therapy*; D013997:Time Factors; D016896:Treatment Outcome