EPV328 - Does the left-handed writer in primary school have the same postural and gestural organization as the right-handed for the same quality of graphomotor writing ?
EPV328
Does the left-handed writer in primary school have the same postural and gestural organization as the right-handed for the same quality of graphomotor writing ?
L. Vaivre-Douret 1 2 3 4 5,*, A. Soter 3, C. Lopez 3
1Faculty of Health, Department of Medicine Paris Descartes, University of Paris Cité, 2Chair of Neurodevelopmental Clinical Phenotyping, Institut Universitaire de France (IUF), 3Faculty of Medicine, University of Paris-Saclay, UVSQ, Villejuif, Research team “Neurodevelopment and learning disabilities”, Necker-Enfants Malades hospital, INSERM Unit 1018-CESP, 4Necker Enfants Malades University hospital, AP-HP. Centre, 5Department of Endocrinology, Necker-Enfants Malades hospital, IMAGINE Institute, Paris, France
Introduction: Writing assessments do not take into account the posturo-gestural organization, and the left-hander is often compared to the right-handed.
Objectives: We aimed to investigate the temporal-spatial quality and posture-gestural of handwriting taking into account the hand laterality of the child.
Methods:
84 typically developing children from 1rst to 3 rd grade, with 11% (n=9) of left-handed executed the copy of pre-scriptural drawing of anticlockwise cycloid loops, previously validated as a robust task to predict good handwriting (Lopez & Vaivre-Douret, Children 2023; 10, 1512).This task is executed with a digital pen on a specific sheet of paper that allowed spatial-temporal and kinematic measures. All the children were recorded with 2 video-cameras and the gestural and postural aspects analyzed in 2 D reconstruction.
Results: There is an increase in the speed of tracing between 1rst and 3rd grade with more loops without significant difference between right-handed and left-handed children. It is observed from 2d grade that left-handers tilt their heads close to the table (p < 0.01), lift their shoulders (p = 0.01), and have no digital mobility (p = 0.04) while placing the hand that writes above the line.
Conclusions: Regardless of the laterality, the spatial-temporal and kinematics parameters do not differ in the quality. However, the left-handed child uses a posturo-gestural compensation to control the visuo-kinesthetic feedback of the left-to-right draw. Important step to respect for the left-handed child allowing him to access the
automation of the graphic gesture.
Disclosure of Interest: None Declared