A Study of the Effect of Preceding Stimuli Upon the Judgment of Auditory Intensities (Classic Reprint)

Excerpt from A Study of the Effect of Preceding Stimuli Upon the Judgment of Auditory Intensities

The present experiment was planned for the purpose of. Seeing Whether any such effect is present in the field of auditory intensities. If it is present, Will it be a contrast effect or will the results conform to the law of central tendency; or do both operate? If such an efiect exists it would be well to have an absolute measure of the magnitude of it. As yet there has been no such measure obtained, but the present experiment does involve such an approach.

The purpose of the experiment can be thus outlined in very broad and general terms. When the problem is stated more specifically one sees that it is an investigation concerned with What has always been called the time error in psychophysical experiments. In many experiments it has been found that there is an over-estimation a negative time error) or an under-estimation a positive time error) of the second stimulus with regard to the first. Attempts have been made to compensate for this asymmetry by reversing the order of presentation of the stimuli or by using a standard above the mid-point of the series; but in most cases the time error was not completely eliminated.

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