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Age-related changes in auditory temporal perception.

B A Morrongiello¹, S E Trehub

¹Department of Psychology, University of Western Ontario, London, Canada.

Journal of Experimental Child Psychology

|December 1, 1987

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Auditory temporal perception improves with age. Infants, children, and adults could detect changes in sound and silence duration, with adults showing the best performance.

Area of Science:

Auditory perception
Developmental psychology
Psychoacoustics

Background:

Auditory temporal perception, the ability to discern timing in sounds, is crucial for speech and music comprehension.
Previous research suggests age-related improvements in auditory processing, but specific duration discrimination abilities across different age groups require further investigation.

Purpose of the Study:

To evaluate and compare the ability of infants, children, and adults to discriminate between signal and silence durations.
To determine how the magnitude of duration change affects auditory temporal perception across these age groups.

Main Methods:

A conditioned-discrimination procedure was employed with participants from three age groups: 6-month-old infants, 5 1/2-year-old children, and adults.
Listeners were presented with sequences of white-noise bursts and trained to detect changes in the duration of middle signal or silence elements.

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Performance was assessed based on the smallest detectable change in duration for both signal and silence.

Main Results:

No significant differences were found in discriminating signal duration versus silence duration across all age groups.
Auditory temporal perception improved with age: infants detected duration changes of 20 ms or more, children 15 ms, and adults 10 ms.
Performance was primarily influenced by the magnitude of the duration change, not the type of sound (signal vs. silence).

Conclusions:

Auditory temporal perception, specifically duration discrimination, shows significant age-related development.
The ability to perceive fine temporal details in auditory stimuli improves from infancy through adulthood.
These findings support existing research on the maturation of auditory processing in early human development.