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The Discrimination of Nonsense Bisyllables by Normal-Hearing and Hearing-Impaired Subjects

Edgerton, Bradly James
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu156646304851774

Abstract Details

1978, Doctor of Philosophy (Ph.D.), Bowling Green State University, Communication Disorders.
The objectives of this investigation were to:(1) develop two 25-item lists of nonsense bisyllables that were equivalent in discriminability for a hearing-impaired subject sample, and (2) to define the characteristic articulation functions derived from normal-hearing and hearing-impaired subjects using the bisyllable lists. The study was conducted in two phases.Two 25-item nonsense bisyllable lists were developed and articulation functions were derived by plotting the mean discrimination scores obtained from 12 normal and 12 hearing-impaired subjects at 5, 15, 25, 35, 45, and 55 dB sensation level above the speech reception threshold. The significance of the differences between the mean speech discrimination scores for the two lists were tested using an analysis of variance and a three factor mixed design with repeated measure on two factors. No significant difference between the mean scores for the two lists was obtained in either subject group or under any of the six intensity test conditions. The influence of three scoring procedures (phoneme, consonant, bisyllable) on list equivalence was also investigated and no significant differences between lists was found for any of the scoring methods. For both subject groups, phoneme, consonant, and bi-syllable functions were steepest and attained their highest discrimination maximum for phoneme scores and were least steep and attained the lowest discrimination maximum for bisyllable scoring. The functions were steeper and attained higher discrimination maximums for normal-hearing subjects than for the hearing-impaired subjects. The substantial differences between the functions derived from the two subject groups supports that the lists developed were sensitive to hearing impairment and warrant further investigation to assess their clinical applicability.
Jeffrey L. Danhauer (Advisor)
Audiology

Recommended Citations

Citations

  • Edgerton, B. J. (1978). The Discrimination of Nonsense Bisyllables by Normal-Hearing and Hearing-Impaired Subjects [Doctoral dissertation, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu156646304851774

    APA Style (7th edition)

  • Edgerton, Bradly. The Discrimination of Nonsense Bisyllables by Normal-Hearing and Hearing-Impaired Subjects. 1978. Bowling Green State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu156646304851774.

    MLA Style (8th edition)

  • Edgerton, Bradly. "The Discrimination of Nonsense Bisyllables by Normal-Hearing and Hearing-Impaired Subjects." Doctoral dissertation, Bowling Green State University, 1978. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu156646304851774

    Chicago Manual of Style (17th edition)

bgsu156646304851774
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