Spatial and numerical processing in children with non-verbal learning disabilities

Research in Developmental Disabilities
Virginie CrollenMarie-Pascale Noël

Abstract

Consistently with the idea that numbers and space interact with each other, the present paper aimed to investigate the impact of non-verbal learning disabilities (NVLD) on spatial and numerical processing. In order to do so, 15 NVLD and 15 control children were required to perform different spatial (the line bisection and Simon tasks) and numerical tasks (the number bisection, number-to-position and numerical comparison tasks). In every task, NVLD children presented lower accuracy scores than the control group. While both groups manifested similar pseudo-neglect and Simon effects, they however differed in the numerical comparison task: while control children presented the standard SNARC effect in the uncrossed and crossed postures, no SNARC effect was observed in the NVLD group. Our results therefore suggest that NVLD affects the accuracy and the nature of the mental number line by decreasing its precision and the saliency of its left-to-right orientation.

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Citations

Sep 1, 2016·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Valérie DormalOlivier Collignon
Oct 7, 2016·Research in Developmental Disabilities·I Fernández-PrietoJ Navarra
Apr 30, 2020·Annals of the New York Academy of Sciences·Krzysztof CiporaHans-Christoph Nuerk
Mar 16, 2018·Frontiers in Psychology·Charlotte SossonChristine Schiltz
Jul 28, 2020·Neuroscience and Biobehavioral Reviews·Virginie Crollen, Olivier Collignon
Jul 10, 2021·Journal of Experimental Child Psychology·Alice BolliniMonica Gori

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