Affiliation:
1. Osaka Prefecture University
2. Osaka Metropolitan University
Abstract
Abstract
Perceptions of current stimuli are sometimes biased toward or away from past perceptions. This phenomenon is called serial dependence. However, the strength of the effect of past responses on serial dependencehas not been fully elucidated. We conducted experiments with a task in which participants estimated the number of dot arrays (numerosity estimation task) and directly compared whether the strength of serial dependence changed in the numerosity estimation task when participants responded or did not respond in the immediately preceding trial. We also examined whether the strength of serial dependence affected the accuracy of the numerosity estimation. We found that attractive serial dependence was stronger when participants responded in the immediately preceding trial than when they only saw the stimulus. This was thought to have occurred because the symbols representing numbers are not activated by simply looking at the dot array. The results suggested that for serial dependence to occur, the representation used for the response on the current trial must have been activated in the previous trial. The magnitude of the serial dependence effect was not observed to affect numerosity estimation performance, and no evidence was found that serial dependence enhances accuracy in the numerosity estimation task.
Publisher
Research Square Platform LLC