Perceptual span,visual span,and visual attention span: Three potential ways to quantify limits on visual processing during reading |
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Authors: | Aline Frey Marie-Line Bosse |
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Affiliation: | 1. ESPE of the Créteil Academy, Chart Laboratory, University of East-Paris Creteil Val de Marne, Paris, France;2. Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, LPNC, Grenoble, France |
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Abstract: | Many lines of evidence have revealed limitations of the human visual system, most notably that only a portion of available information is processed in a single glance. A degree of conceptual confusion has emerged, however, regarding the underlying concepts or mechanisms explaining limited visual processing in reading; perceptual span, visual span, or visual attention span. While the original definitions of these three concepts are clear and well-differentiated, they are routinely used inconsistently in the literature. The primary goal of the present review is to re-specify these three concepts in terms of what they correspond to and how they are determined. Further, we investigate whether these three spans refer to vision-related measurements and/or are based on general cognitive abilities. This review should lead to a better understanding of the involvement of visual functions in reading performance. |
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Keywords: | Reading eye movements perceptual span visual span visual attention span |
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