Construct Validity of Direct Magnitude Estimation and Interval Scaling of Speech Intelligibility Evidence from a Study of the Hearing Impaired Research Article
Research Article  |   September 01, 1981
Construct Validity of Direct Magnitude Estimation and Interval Scaling of Speech Intelligibility
 
Author Affiliations & Notes
  • Nicholas Schiavetti
    State University of New York, Geneseo
  • Dale Evan Metz
    National Technical Institute for the Deaf at Rochester Institute of Technology, New York
  • Ronald W. Sitler
    State University of New York, Geneseo
Article Information
Research Articles
Research Article   |   September 01, 1981
Construct Validity of Direct Magnitude Estimation and Interval Scaling of Speech Intelligibility
Journal of Speech, Language, and Hearing Research, September 1981, Vol. 24, 441-445. doi:10.1044/jshr.2403.441
History: Received July 7, 1980 , Accepted September 5, 1980
 
Journal of Speech, Language, and Hearing Research, September 1981, Vol. 24, 441-445. doi:10.1044/jshr.2403.441
History: Received July 7, 1980; Accepted September 5, 1980

The appropriateness of direct magnitude estimation and interval scaling procedures for assessing the speech intelligibility of hearing-impaired adults was investigated by determining whether the continuum of the talkers' intelligibility was prothetic or metathetic. The intelligibility of 20 hearing-impaired talkers was scaled by 20 listeners using direct magnitude estimation and by 20 listeners using interval scaling. The two sets of scaling data were related in the curvilinear fashion that is typical of prothetic continua, indicating better construct validity for direct magnitude estimation than for interval scaling of speech intelligibility.

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