Influence of frequency on the estimation of time for auditory, visual, and tactile modalities: The kappa effect.

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Abstract
Tested the hypothesis that a spatial component of frequency, wavelength, has a direct effect on the subjective estimation of filled time intervals on 40 undergraduates. Combinations of pairs of auditory tones, visual flicker, and tactile vibrations with 3 stimulus intensities, and 7 levels of disparity within each pair of stimuli were studied. The Ss estimated by reproduction whichever frequency in the pair seemed to last longer. Results, which support the hypothesis only for auditory tones, indicate Ss overestimate the duration of the lower of 2 frequencies significantly more than the higher, and their overestimates increase with increasing disparity between frequencies. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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