Discrimination of short temporal intervals: A comparison of two models
- David J. Getty
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Duration-discrimination data from an experiment using empty auditory intervals in a two-alternative forced-choice paradigm are presented. The observed functional relationship between standard deviation of the psychometric density function and stimulus duration is shown to be fit significantly better by a Weber’s law model of duration discrimination than by Creelman’s counter model. Both models fail to predict the rapid rise in the Weber fraction observed for durations longer than about 2 sec. However, the Weber’s law model, based on a generalization of Weber’s law, accurately predicts the initial drop in the Weber fraction for very short durations and the observed constancy of the Weber fraction for durations up to 2 sec.
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- Discrimination of short temporal intervals: A comparison of two models
Perception & Psychophysics
Volume 18, Issue 1 , pp 1-8
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- David J. Getty (1)
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- 1. Psychology Department, Brown University, 02912, Providence, Rhode Island