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Relationships among Effectiveness, Intelligibility, and Selected Perceptual Ratings of Esophageal Speech

Filter, Maynard D.
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555931250427091

Abstract Details

1971, Doctor of Philosophy (Ph.D.), Bowling Green State University, Communication Studies.
The purpose of the present study was to determine if judges could be trained to rate reliably the following perceptual attributes of esophageal speech: Effectiveness, intelligibility, articulation, rate, loudness, respiratory noise, variability (of loudness and pitch), quality and pitch; to determine the perceptual correlates of ratings of effectiveness and intelligibility; and to capture the models that indicate on which attributes listener judgments were based when rating effectiveness and intelligibility. Three graduate students in Speech Pathology were trained in rating each of the above attributes of esophageal speech using a nine-point rating scale. After training the judges rated 60 samples of esophageal speech on each of the above attributes except pitch because it could not be rated reliably. Simple zero-order correlations,multiple correlations and semi-partial correlations were computed to study the interrelationships of variance of judges ratings. Results of the study showed that all attributes except pitch could be reliably rated, that ratings of effectiveness and ratings of intelligibility were virtually the same thing; and that ratings of effectiveness and intelligibility were predicted on the basis of ratings of only two attributes (the best combination was variability and noise). These results suggest that ratings of effectiveness and intelligibility are not multi-dimensional. Before ratings of the attributes of rate, loudness, noise, variability, and quality are used clinically, they should be compared with their acoustical counterparts. Results of these studies would indicate the validity of the perceptual ratings and the applicability of replacing acoustical parameters with perceptual ratings of these parameters. The inability of the listeners to differentiate ratings of effectiveness and intelligibility suggests that methods other than ratings should be further investigated for measuring intelligibility and that the ratings of effectiveness and intelligibility obtained in the present study be called effectiveness. Judges also had a difficult time rating articulation and if further training does not improve the reliability and efficiency of ratings of articulation, then methods other than rating should be investigated for measuring articulation. The best method for evaluating esophageal speech may be a combination of a rating of effectiveness plus an articulation test which would provide a phonetic analysis, plus ratings of loudness and noise (which were the two most independent variables in'the study). The findings of the present study provide a basis for developing more efficient methods for evaluating esophageal speech and suggest directions and needs for further research.
Melvin Hyman (Advisor)
Communication

Recommended Citations

Citations

  • Filter, M. D. (1971). Relationships among Effectiveness, Intelligibility, and Selected Perceptual Ratings of Esophageal Speech [Doctoral dissertation, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555931250427091

    APA Style (7th edition)

  • Filter, Maynard. Relationships among Effectiveness, Intelligibility, and Selected Perceptual Ratings of Esophageal Speech. 1971. Bowling Green State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555931250427091.

    MLA Style (8th edition)

  • Filter, Maynard. "Relationships among Effectiveness, Intelligibility, and Selected Perceptual Ratings of Esophageal Speech." Doctoral dissertation, Bowling Green State University, 1971. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1555931250427091

    Chicago Manual of Style (17th edition)

bgsu1555931250427091
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