Embodied numerosity: Implicit hand-based representations influence symbolic number processing across cultures |
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| Authors: | Frank Domahs Korbinian Moeller Stefan Huber Klaus Willmes Hans-Christoph Nuerk |
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| Institution: | 1. Lehr- und Forschungsgebiete Neuropsychologie und Neurolinguistik, Universitätsklinikum der RWTH Aachen, Pauwelsstr. 30, Aachen, Germany;2. Abteilung Klinische Linguistik, Philipps-Universität Marburg, Germany;3. Interdisziplinäres Zentrum für Klinische Forschung IZKF ‘BIOMAT.’, Universitätsklinikum der RWTH Aachen University, Aachen, Germany;4. Institute of Psychology, Eberhard Karls University Tuebingen, Germany;5. Department of Psychology, Paris-Lodron University Salzburg, Austria;1. Numerical Cognition Laboratory, Department of Psychology and Brain & Mind Institute, Western University, London ON, Canada;2. Center for the Study of Learning, Department of Pediatrics, Georgetown University, Washington DC, USA;3. Mathematical Brain Laboratory & Child Development and Social Policy Laboratory, Department of Psychology, Georgetown University, Washington DC, USA;1. Department of Psychology, Barnard College, Columbia University, New York, NY 10027, USA;2. Department of Psychology, Harvard University, Cambridge, MA 02138, USA;1. Department of Psychology, Emory University, Atlanta, GA 30322, USA;2. Department of Psychology, University of South Florida, Tampa, FL 33620, USA;3. Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30458, USA;1. LEAD Graduate School & Research Network, University of Tübingen, Germany;2. Hector Research Institute of Education Sciences and Psychology, University of Tübingen, Germany;3. Member of the Postdoc Academy of the Hector Research Institute of Education Sciences and Psychology, University of Tübingen, Germany;4. Leibniz-Institut für Wissensmedien, Tübingen, Germany;5. Department of Psychology, University of Tübingen, Germany;6. Luxembourg Centre for Educational Testing, University of Luxembourg, Luxembourg;7. Education, Culture, Cognition and Society, Cognitive Science and Assessment, University of Luxembourg, Luxembourg;8. Observatoire National de la Qualité Scolaire, Luxembourg;9. Centre For Mathematical Cognition, School of Science, Loughborough University, Loughborough, United Kingdom;1. Basque Center on Cognition Brain and Language, San Sebastian, Spain;2. IKERBASQUE, Basque Foundation for Science, Bilbao, Spain |
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| Abstract: | In recent years, a strong functional relationship between finger counting and number processing has been suggested. Developmental studies have shown specific effects of the structure of the individual finger counting system on arithmetic abilities. Moreover, the orientation of the mental quantity representation (“number line”) seems to be influenced by finger counting habits. However, it is unclear whether the structure of finger counting systems still influences symbolic number processing in educated adults.In the present transcultural study, we pursued this question by examining finger-based sub-base-five effects in an Arabic number comparison task with three different groups of participants (German deaf signers, German and Chinese hearing adults). We observed sub-base-five effects in all groups, but particularly so for both German groups who use an explicit sub-base-five system in their finger counting habits. It is concluded that bodily experiences – namely finger counting – influence the structure of the abstract mental number representations even in adults. Thus, the present findings support the general idea that even seemingly abstract cognition may at least partially be rooted in our bodily experiences. |
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