Purpose: This study investigated whether whole nonword accuracy, phoneme accuracy, and acoustic duration measures were influenced by the amount of feedback speakers without impairment received during a novel speech motor learning task. Method: Thirty-two native English speakers completed a nonword production task across 3 time points: practice, short-term retention, and long-term retention. During practice, participants received knowledge of results feedback according to a randomly assigned schedule (100%, 50%, 20%, or 0%). Changes in nonword accuracy, phoneme accuracy, nonword duration, and initial-cluster duration were compared among feedback groups, sessions, and stimulus properties. Results: All participants improved phoneme and whole nonword accuracy at short-term and long-term retention time points. Participants also refined productions of nonwords, as indicated by a decrease in nonword duration across sessions. The 50% group exhibited the largest reduction in duration between practice and long-term retention for nonwords with native and nonnative clusters. Conclusions: All speakers, regardless of feedback schedule, learned new speech motor behaviors quickly with a high degree of accuracy and refined their speech motor skills for perceptually accurate productions. Acoustic measurements may capture more subtle, subperceptual changes that may occur during speech motor learning. Supplemental Materials: https://doi.org/10.23641/asha.5116324.
RCT Entities:
Purpose: This study investigated whether whole nonword accuracy, phoneme accuracy, and acoustic duration measures were influenced by the amount of feedback speakers without impairment received during a novel speech motor learning task. Method: Thirty-two native English speakers completed a nonword production task across 3 time points: practice, short-term retention, and long-term retention. During practice, participants received knowledge of results feedback according to a randomly assigned schedule (100%, 50%, 20%, or 0%). Changes in nonword accuracy, phoneme accuracy, nonword duration, and initial-cluster duration were compared among feedback groups, sessions, and stimulus properties. Results: All participants improved phoneme and whole nonword accuracy at short-term and long-term retention time points. Participants also refined productions of nonwords, as indicated by a decrease in nonword duration across sessions. The 50% group exhibited the largest reduction in duration between practice and long-term retention for nonwords with native and nonnative clusters. Conclusions: All speakers, regardless of feedback schedule, learned new speech motor behaviors quickly with a high degree of accuracy and refined their speech motor skills for perceptually accurate productions. Acoustic measurements may capture more subtle, subperceptual changes that may occur during speech motor learning. Supplemental Materials: https://doi.org/10.23641/asha.5116324.
Authors: Edwin Maas; Donald A Robin; Shannon N Austermann Hula; Skott E Freedman; Gabriele Wulf; Kirrie J Ballard; Richard A Schmidt Journal: Am J Speech Lang Pathol Date: 2008-08 Impact factor: 2.408
Authors: Shannon N Austermann Hula; Donald A Robin; Edwin Maas; Kirrie J Ballard; Richard A Schmidt Journal: J Speech Lang Hear Res Date: 2008-08-26 Impact factor: 2.297
Authors: Phil Weir-Mayta; Kristie A Spencer; Steven M Bierer; Ayoub Daliri; Peter Ondish; Ashley France; Erika Hutchison; Caitlin Sears Journal: Int J Aging Res Date: 2019
Authors: Kaila L Stipancic; Yi-Ling Kuo; Amanda Miller; Hayden M Ventresca; Dagmar Sternad; Teresa J Kimberley; Jordan R Green Journal: Exp Brain Res Date: 2021-09-15 Impact factor: 1.972