Kilic, Asliİnan, Aslı BaharInan, Asli BaharPsikoloji2022-12-152022-12-152022Kılıç, Aslı; İnan, Aslı Bahar (2022). "Response bias in numerosity perception at early judgments and systematic underestimation", Attention, Perception, and Psychophysics, Vol. 84, No. 1, pp. 188-204.1943-39211943-393Xhttps://doi.org/10.3758/s13414-021-02365-3Kilic, Asli/0000-0002-6052-9796Mental number representation relies on mapping numerosity based on nonsymbolic stimuli to symbolic magnitudes. It is known that mental number representation builds on a logarithmic scale, and thus numerosity decisions result in underestimation. In the current study, we investigated the temporal dynamics of numerosity perception in four experiments by employing the response-deadline SAT procedure. We presented random number of dots and required participants to make a numerosity judgment by comparing the perceived number of dots to 50. Using temporal dynamics in numerosity perception allowed us to observe a response bias at early decisions and a systematic underestimation at late decisions. In all three experiments, providing feedback diminished the magnitude of underestimation, whereas in Experiment 3 the absence of feedback resulted in greater underestimation errors. These results were in accordance with the findings that suggested feedback is necessary for the calibration of the mental number representation.eninfo:eu-repo/semantics/openAccessNumerosity PerceptionMental Number LineSpeed-Accuracy Trade-OffResponse Deadline ProcedureArticle84118820410.3758/s13414-021-02365-32-s2.0-85114842561WOS:00069538260000234518971Q3Q3