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Journal of Speech and Hearing Research Vol.35 892-902 August 1992.
© American Speech-Language-Hearing Association
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Age-Related Differences in Processing Dynamic Information to Identify Vowel Quality

Robert Allen Fox 1
Lida G. Wall 1

Jeanne Gokcen 1
1 Division of Speech and Hearing Science The Ohio State University, Columbus

This study examined age-related differences in the use of dynamic acoustic information (in the form of formant transitions) to identify vowel quality in CVCs. Two versions of 61 naturally produced, commonly occurring, monosyllabic English words were created: a control version (the unmodified whole word) and a silent-center version (in which approximately 62% of the medial vowel was replaced by silence). A group of normal-hearing young adults (19–25 years old) and older adults (61–75 years old) identified these tokens. The older subjects were found to be significantly worse than the younger subjects at identifying the medial vowel and the initial and final consonants in the silent-center condition. These results support the hypothesis of an age-related decrement in the ability to process dynamic perceptual cues in the perception of vowel quality.

KEY WORDS: silent-center vowels, dynamic acoustic information, age-related changes in vowel perception

Submitted on March 19, 1991
Accepted on August 26, 1991


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