The impact of speech supplementation and clear speech on the intelligibility and speaking rate of people with traumatic brain injury

David R. Beukelman, Susan Fager, Cara Ullman, Elizabeth Hanson, Jeri Logemann

Research output: Contribution to journalArticle

39 Scopus citations


The purpose of this study was to investigate the differences in speech intelligibility and speaking rate for (a) habitual speech, (b) clear speech, (c) alphabet-supplemented speech, and (d) topic-supplemented speech. Eight people with severe dysarthria following traumatic brain injury participated in this project. Speakers were video recorded as they produced ten sentences under each of the four conditions. Five listeners transcribed each of the speech samples. The alphabet-supplemented speech intervention yielded significantly larger higher observed intelligibility scores than habitual speech, clear speech, topic-supplemented speech, or alphabet-supplemented habitual speech.

Original languageEnglish (US)
Pages (from-to)237-242
Number of pages6
JournalJournal of Medical Speech-Language Pathology
Issue number4
Publication statusPublished - Dec 1 2002


ASJC Scopus subject areas

  • Otorhinolaryngology
  • Rehabilitation
  • Speech and Hearing

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