Duration Illusion and Auditory Grouping in Infancy

Extended previous research on perceptual grouping in infancy ( Thorpe, Trehub, Morrongiello, & Bull, 1988 ). Infants' detection of temporal increments to silent intervals between groups of tones was compared with their detection of comparable silent increments within groups of tones. Ss wer...

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Bibliographic Details
Published in:Developmental psychology 1989-01, Vol.25 (1), p.122-127
Main Authors: Thorpe, Leigh A, Trehub, Sandra E
Format: Article
Language:English
Subjects:
Auditory Discrimination
Babies
Biological and medical sciences
Child development
Developmental psychology
Ears & hearing
Fundamental and applied biological sciences. Psychology
Human
Illusions (Perception)
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Stimulus Duration
Stimulus Intervals
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Summary:Extended previous research on perceptual grouping in infancy ( Thorpe, Trehub, Morrongiello, & Bull, 1988 ). Infants' detection of temporal increments to silent intervals between groups of tones was compared with their detection of comparable silent increments within groups of tones. Ss were presented with standard 6-tone sequences, with the first 3 tones differing from the last 3 in harmonic structure, frequency, or intensity, and contrasting sequences with increments of 80 or 100 ms to the silent interval between the 3rd and 4th tone (XXX OOO, between groups) or between the 4th and 5th tone (XXXO OO, within group). Infants discriminated temporally altered sequences from the standard only when the increments occurred within a group. The authors conclude that perceptual grouping processes are operative in infancy and that infants perceive the silent increments between groups of sounds as longer than identical intervals within a group, as do adults.
ISSN:0012-1649
1939-0599
DOI:10.1037/0012-1649.25.1.122