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Apraxia of Speech: Perceptual Analysis of Consonant Production in Multisyllabic Words
Shannon Mauszycki and Julie L. Wambaugh

This investigation was designed to examine the number of errors and types of errors by syllable position in productions of three syllable words with a speaker with acquired apraxia of speech. Stimuli were randomly presented on three sampling occasions and consonant productions were examined via perceptual analysis. Results revealed a greater number of errors in the syllable final position followed by syllable initial and medial positions respectively. The number of errors in the syllable final position was similar across sampling times. However, errors in the syllable initial and medial positions declined over subsequent sampling times. The number of error types that occurred varied by syllable position. Omission and distortion errors occurred in the syllable initial position. In syllable medial and final positions, omission, distortion and addition errors were found. However, in the syllable final position substitution errors also occurred. These findings indicate the number of errors and types of errors in AOS may differ by syllable position. The findings also suggest the type of errors that occur may be influenced by syllable structure.

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