Abstract
A battery of eight auditory discrimination tests was designed to measure the primary dimension along which simple and complex sounds can be discriminated. Six of the tests, selected on the basis of data collected in an earlier 22-subtest version of the battery [D. M. Johnson, J. K. Jensen, and C. S. Watson, J. Acoust. Soc. Am. Suppl. 1 67, S52 (1980)], use tonal stimuli: tests of frequency, intensity, and duration discrimination, using single tones, and tests of rhythm, temporal order, and tonal-pattern discrimination using multitone sequences. Two additional tests employ speech sounds: a syllable order discrimination test and a modification of one portion- of a nonsense syllable identification test [J. R. Dubno and H. Levitt, J. Acoust. Soc. Am. 69, 249–261 (1981)]. The tape-recorded tests were designed to be administered to groups of listeners in a free field, moderately low-reverberation environment. with responses recorded on printed forms. Seventy-two modified 2AFC trials, distributed among eight stimulus values, are presented in each of the discrimination tests. Performance of groups of listeners given successive versions of the test battery show it to be a reliable screening instrument for the measurement of auditory discrimination abilities. [Work supported by NIH/NINCDS.]
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