Reliability and Sensitivity of Paired Comparisons and Category Rating in Children Children’s subjective judgments of speech clarity using the methods of paired comparisons and category rating were evaluated in this investigation. Eighty children with normal hearing between the ages of 4 and 8 years judged the clarity of sentences that were systematically bandpass-filtered using conditions that increased intelligibility as estimated by ... Research Article
Research Article  |   October 01, 1995
Reliability and Sensitivity of Paired Comparisons and Category Rating in Children
 
Author Affiliations & Notes
  • Laurie S. Eisenberg
    UCLA School of Medicine, Division of Head and Neck Surgery, Los Angeles, CA
  • Donald D. Dirks
    UCLA School of Medicine, Division of Head and Neck Surgery, Los Angeles, CA
  • Contact author: Laurie S. Eisenberg, PhD, UCLA School of Medicine, Division of Head and Neck Surgery, 31–24 Rehabilitation Center, Los Angeles, CA 90095.
    Contact author: Laurie S. Eisenberg, PhD, UCLA School of Medicine, Division of Head and Neck Surgery, 31–24 Rehabilitation Center, Los Angeles, CA 90095.×
Article Information
Speech, Voice & Prosodic Disorders / Research Issues, Methods & Evidence-Based Practice / Hearing / Research Articles
Research Article   |   October 01, 1995
Reliability and Sensitivity of Paired Comparisons and Category Rating in Children
Journal of Speech, Language, and Hearing Research, October 1995, Vol. 38, 1157-1167. doi:10.1044/jshr.3805.1157
History: Received November 16, 1994 , Accepted May 22, 1995
 
Journal of Speech, Language, and Hearing Research, October 1995, Vol. 38, 1157-1167. doi:10.1044/jshr.3805.1157
History: Received November 16, 1994; Accepted May 22, 1995

Children’s subjective judgments of speech clarity using the methods of paired comparisons and category rating were evaluated in this investigation. Eighty children with normal hearing between the ages of 4 and 8 years judged the clarity of sentences that were systematically bandpass-filtered using conditions that increased intelligibility as estimated by the Articulation Index. Subjects were classified into four age groups (4-, 5-, 6-, and 7–8-year age groups) with 20 subjects per group. With use of materials and training methods suitable for children, judgments were obtained via the two psychophysical procedures (10 subjects per age group for each procedure). Results indicated that children 5 years of age and older were able to make reliable clarity judgments using either procedure; however, the method of paired comparisons was more sensitive than category rating in detecting differences between the bandpass-filtered conditions.

Acknowledgments
This research was funded by a grant from the NIH-NIDCD (K08 DC00083) and the 1993 Clinical Research Grant awarded to the first author by the American Speech-Language-Hearing Foundation and the American Speech-Language-Hearing Association. The authors gratefully acknowledge the contributions of Shawn Gao and Ed Wu for technical assistance and development of software, Jeff Gornbein for consultation in statistical analysis, and Amy Schaefer for assistance in subject recruitment and data collection. Susan Jerger provided us with illustrated materials from the PSI test, and we thank her for this generosity. We express gratitude to the staff and administration of the Corinne E. Seeds University Elementary School for permitting us to use their facilities and test their students; most notably, we are indebted to Harold Hyman and Deborah Stipek for their support during this project, and to Muriel Ifek-wunigwe whose invaluable assistance made completion of this study possible. Finally, the insightful comments and suggestions provided by Frederic Wightman and Prudence Allen on an earlier draft of this manuscript were extremely helpful and most appreciated.
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