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American Journal of Audiology Vol.13 158-163 December 2004. doi:10.1044/1059-0889(2004/020)
© American Speech-Language-Hearing Association
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Effects of Test Order on Most Comfortable and Uncomfortable Loudness Levels for Speech

Jerry Punch 1, Brad Rakerd 1, and Antony Joseph 1

1 Michigan State University, East Lansing

jpunch{at}msu.edu

This study examined test-order effects on most comfortable loudness (MCL) and uncomfortable loudness (UCL) levels for spondaic words in 2 groups of 30 normal hearing listeners each. For Group 1, MCL was measured first, followed by UCL. For Group 2, UCL was measured first, and then MCL. A retest was conducted for both groups. Results showed that MCL was significantly elevated for Group 2, but not for Group 1. There was no effect on UCL for either group. In a follow-up experiment, the magnitude of the test-order effect on MCL increased significantly when MCL measurements followed UCL measurements closely in time. These results argue for management of the ordering and temporal spacing of MCL and UCL testing in clinical loudness measurements.

Key Words: loudness, most comfortable loudness, uncomfortable loudness

Submitted on March 31, 2004
Accepted on April 27, 2004


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