Time order error and position effect of a standardized stimulus in discrimination of short time duration |
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Authors: | T Rammsayer K M Wittkowski |
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Affiliation: | FB Psychologie, Justus-Liebig-Universit?t Giessen. |
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Abstract: | In comparison judgments of two successively presented time intervals ranging from 30 to 70 msec a time-order error (TOE) as well as a systematic effect depending on the constant position error (CPE) were demonstrated. The effects proved to be independent. Contrary to Vierordt's law, a negative TOE was found. When presenting the standard interval first, an increased hit rate resulting in a positive CPE was established. Furthermore, a test statistic is introduced that allows analysis of experiments utilizing all available information of a subject's psychometric function. |
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