ORIGINAL ARTICLE
TEST-RETEST RELIABILITY OF VARIOUS PSYCHOACOUSTIC MEASURES USING THE MAXIMUM LIKELIHOOD PROCEDURE
Chandni Jain 1, A,C-F  
,   Kirti Joshi 1, B-C,F  
 
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Audiology, All India Institute of Speech and Hearing, India
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article;
CORRESPONDING AUTHOR
Chandni Jain   

Audiology, All India Institute of Speech and Hearing, Naimisham Campus, 570006, Mysuru, India; email: chandni.aud@gmail.com, Phone: +918212502358
Submission date: 2020-05-14
Final revision date: 2020-06-23
Acceptance date: 2020-06-30
Publication date: 2020-08-24
 
J Hear Sci 2020;10(2):55–59
 
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ABSTRACT
Objective:
Psychoacoustic abilities include the perception of frequency, intensity, and the temporal parameters of sound, which are necessary for speech perception. These abilities can be measured using adaptive and non-adaptive procedures. The maximum likelihood procedure (MLP) is an adaptive psychophysical procedure that is usually utilized in psychoacoustic tasks. The present study aimed to assess the testretest reliability of various psychoacoustic measures assessed using the MLP toolbox implemented in Matlab.

Material and methods:
A total of 20 participants with normal hearing sensitivity were selected for the study. The test–retest reliability of psychoacoustic measures was studied in terms of frequency difference limen, intensity difference limen, duration discrimination thresholds, gap detection thresholds, and modulation detection thresholds (4 Hz and 128 Hz). To check test–retest reliability all measures were assessed twice within a span of one day.

Results:
The results showed no significant difference in the various psychoacoustic measures obtained across the two sessions. The reliability of each measure was tested using the intraclass correlation coefficient (ICC).The results indicated that the test-retest reliability of various psychoacoustic measures assessed using the MLP toolbox was fair to good.

Conclusions:
It can be concluded that MLP is a reliable tool to assess various psychoacoustic abilities.