Unfolding visual lexical decision in time.

PloS One
Laura Barca, Giovanni Pezzulo

Abstract

Visual lexical decision is a classical paradigm in psycholinguistics, and numerous studies have assessed the so-called "lexicality effect" (i.e., better performance with lexical than non-lexical stimuli). Far less is known about the dynamics of choice, because many studies measured overall reaction times, which are not informative about underlying processes. To unfold visual lexical decision in (over) time, we measured participants' hand movements toward one of two item alternatives by recording the streaming x,y coordinates of the computer mouse. Participants categorized four kinds of stimuli as "lexical" or "non-lexical:" high and low frequency words, pseudowords, and letter strings. Spatial attraction toward the opposite category was present for low frequency words and pseudowords. Increasing the ambiguity of the stimuli led to greater movement complexity and trajectory attraction to competitors, whereas no such effect was present for high frequency words and letter strings. Results fit well with dynamic models of perceptual decision-making, which describe the process as a competition between alternatives guided by the continuous accumulation of evidence. More broadly, our results point to a key role of statistical decision ...Continue Reading

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Citations

Aug 12, 2014·Neural Networks : the Official Journal of the International Neural Network Society·Nicola Catenacci VolpiGiovanni Pezzulo
Oct 29, 2014·Psychological Research·Andrea FluminiGiovanni Pezzulo
Jul 19, 2013·Scientific Reports·Denis O'HoraFionnuala Connolly
Sep 6, 2015·Experimental Brain Research·Cinzia CallusoAnnalisa Tosoni
Jun 26, 2015·Proceedings. Biological Sciences·Zohar Z BronfmanMarius Usher
Apr 8, 2015·PLoS Computational Biology·Nathan F Lepora, Giovanni Pezzulo
May 26, 2017·PloS One·Merylin MonaroGiuseppe Sartori
Jan 13, 2017·Behavior Research Methods·Antonio CalcagnìSimone Sulpizio
Apr 25, 2018·The Quarterly Journal of Experimental Psychology : QJEP·Sean Hk KangMelvin J Yap
Jan 19, 2018·The Behavioral and Brain Sciences·Laura Barca, Giovanni Pezzulo
Sep 14, 2019·Attention, Perception & Psychophysics·Jonas Lins, Gregor Schöner
Jan 27, 2019·Behavior Research Methods·Martin SchoemannStefan Scherbaum
Jan 11, 2020·Frontiers in Psychology·Antonio CalcagnìFrancesca Freuli
Jun 22, 2021·Frontiers in Psychology·Alessandra Nicoletta Cruz YuLaura Barca

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