Journal
CORTEX
Volume 47, Issue 5, Pages 617-620Publisher
ELSEVIER MASSON
DOI: 10.1016/j.cortex.2010.10.006
Keywords
Spatial-numerical association; Free-choice task; Eye movement responses
Funding
- Programa Nacional de I+D (Subprograma de Acciones Integradas) [DE2009-0040, PSI2008-02889-E, SEJ-PSI2009-13922]
- Programme des Projektbezogenen Personenaustauschs des DAAD [Z-50282682]
- Deutsche Forschungsgemeinschaft [SFB 833]
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Since Dehaene et al. (1993) reported the SNARC (Spatial Numerical Association of Response Codes) effect, researchers have repeatedly documented an influence of number magnitude on reaction time in various motor tasks. In addition, thinking about numbers induces shifts of visuo-spatial attention (Fischer et al., 2003). The present study examined whether number magnitude affects a person's eye movement in a free-choice task. After the presentation of a number in the middle of the screen, two pictures of human faces were simultaneously presented on either side of the screen. Participants were asked to explore the screen after the presentation of a number. Analyses performed on first eye fixations confirmed that number magnitude affects gaze direction in this free-choice task. The present study shows that the influence of number magnitude on visuo-spatial attention affects the choice of where to look first. (C) 2010 Elsevier Srl. All rights reserved.
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