The role of a change heuristic in judgments of sound duration |
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Authors: | Launa C Leboe Todd A Mondor |
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Institution: | (1) Institute for Systems Research, Electrical and Computer Engineering Department, University of Maryland, College Park, MD, USA |
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Abstract: | The present study investigated whether the quality of a frequency change within a sound (i.e., smooth vs. abrupt) would influence
perception of its duration. In three experiments, participants were presented with two consecutive sounds on each of a series
of trials, and their task was to judge whether the second sound was longer or shorter in duration than the first. In Experiment
1, participants were more likely to judge sounds consisting of a smooth and continuous change in frequency as longer in duration
than sounds that maintained a constant frequency. In Experiment 2, the same bias was observed for sounds incorporating an
abrupt change in frequency, but only when the frequency change was relatively small. The results of Experiment 3 suggested
that the application of a change heuristic when generating duration judgments depends on the perception of change as originating
from a single, integrated perceptual object. |
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Keywords: | |
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