A Case Study on Vocal Loudness With a Young Adult With Autism Spectrum Disorder and Developmental Delay Purpose This clinical focus article describes an exploratory case study addressing reduction of vocal loudness in a young adult with a history of autism spectrum disorder and developmental delay. The need for a short-term pullout individual intervention arose from his participation in the Advancing Language and Literacy group, a program ... Clinical Focus
Clinical Focus  |   November 01, 2015
A Case Study on Vocal Loudness With a Young Adult With Autism Spectrum Disorder and Developmental Delay
 
Author Affiliations & Notes
  • Amanda Pack
    Glenrose Rehabilitation Hospital, Edmonton, Alberta, Canada
  • Paola Colozzo
    University of British Columbia, Vancouver, Canada
  • B. May Bernhardt
    University of British Columbia, Vancouver, Canada
  • Bosko Radanov
    University of British Columbia, Vancouver, Canada
  • Riley Rosebush
    University of British Columbia, Vancouver, Canada
  • Stefka H. Marinova-Todd
    University of British Columbia, Vancouver, Canada
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Paola Colozzo: paola.colozzo@audiospeech.ubc.ca
  • Editor: Krista Wilkinson
    Editor: Krista Wilkinson×
  • Associate Editor: Kathryn Drager
    Associate Editor: Kathryn Drager×
Article Information
Hearing & Speech Perception / Acoustics / Special Populations / Autism Spectrum / Clinical Focus
Clinical Focus   |   November 01, 2015
A Case Study on Vocal Loudness With a Young Adult With Autism Spectrum Disorder and Developmental Delay
American Journal of Speech-Language Pathology, November 2015, Vol. 24, 587-593. doi:10.1044/2015_AJSLP-14-0209
History: Received December 6, 2014 , Revised April 28, 2015 , Accepted July 21, 2015
 
American Journal of Speech-Language Pathology, November 2015, Vol. 24, 587-593. doi:10.1044/2015_AJSLP-14-0209
History: Received December 6, 2014; Revised April 28, 2015; Accepted July 21, 2015

Purpose This clinical focus article describes an exploratory case study addressing reduction of vocal loudness in a young adult with a history of autism spectrum disorder and developmental delay. The need for a short-term pullout individual intervention arose from his participation in the Advancing Language and Literacy group, a program that provides support for enhancement of speech, language, and literacy skills for young adults with developmental disabilities.

Method The participant attended individual treatment sessions weekly for 9 sessions, all of which were digitally audio-recorded. Client awareness of different loudness levels was first established using nonspeech sounds and speech samples. Loudness in spontaneous speech was monitored with support of verbal and visual feedback in the individual sessions and tracked in individual sessions as well as sessions of the Advancing Language and Literacy group, which served as a generalization context.

Results In the individual sessions, the participant's spontaneous production of acceptable volume improved from 42% to 92% of utterances. Observation of group participation indicated generalization, with the majority of utterances produced posttreatment at an acceptable volume.

Conclusions This clinical focus article emphasizes suprasegmental aspects as a dimension of communicative competence and highlights the need for continued intervention research and services for young adults with developmental disabilities.

Acknowledgments
The authors wish to express their sincere appreciation to the participant and his family, ALL group members, and the School of Audiology and Speech Sciences at the University of British Columbia for space and support.
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