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Approaching stimuli bias attention in numerical space

Longo, Matthew R. and Lourenco, S.F. and Francisco, A. (2012) Approaching stimuli bias attention in numerical space. Acta Psychologica 140 (2), pp. 129-132. ISSN 0001-6918.

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Official URL: http://dx.doi.org/10.1016/j.actpsy.2012.04.001

Abstract

Increasing evidence suggests that common mechanisms underlie the direction of attention in physical space and numerical space, along the mental number line. The small leftward bias (pseudoneglect) found on paper-and-pencil line bisection is also observed when participants ‘bisect’ number pairs, estimating (without calculating) the number midway between two others. Here we investigated the effect of stimulus motion on attention in numerical space. A two-frame apparent motion paradigm manipulating stimulus size was used to produce the impression that pairs of numbers were approaching (size increase from first to second frame), receding (size decrease), or not moving (no size change). The magnitude of pseudoneglect increased for approaching numbers, even when the final stimulus size was held constant. This result is consistent with previous findings that pseudoneglect in numerical space (as in physical space) increases as stimuli are brought closer to the participant. It also suggests that the perception of stimulus motion modulates attention over the mental number line and provides further support for a connection between the neural representations of physical space and number.

Item Type: Article
Additional Information: “NOTICE: this is the author’s version of a work that was accepted for publication in Acta Psychologica. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PUBLICATION, [VOL#, ISSUE#, (DATE)] DOI#”
Keyword(s) / Subject(s): Number line, Looming, Pseudoneglect, Laterality
School or Research Centre: Birkbeck Schools and Research Centres > School of Science > Psychological Sciences
Depositing User: Dr Matthew R Longo
Date Deposited: 29 May 2012 11:13
Last Modified: 17 Apr 2013 12:33
URI: http://eprints.bbk.ac.uk/id/eprint/4705

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