Computerised Assessment of Graphomotor Difficulties in a Cohort of School-aged Children.

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Authors

MEKYSKA Jiří GALÁŽ Zoltan ŠAFÁROVÁ Katarína ZVONČÁK Vojtěch MUCHA Jan SMÉKAL Zdeněk ONDRÁČKOVÁ Anežka URBÁNEK Tomáš HAVIGEROVÁ Jana Marie BEDNÁŘOVÁ Jiřina FAÚNDEZ-ZANUY Marcos

Year of publication 2019
Type Article in Proceedings
Conference 2019 11th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)
MU Faculty or unit

Faculty of Arts

Citation
Doi http://dx.doi.org/10.1109/ICUMT48472.2019.8970767
Keywords computerised analysis; digitizer; graphomotor difficulties; graphomotor elements; machine learning; online handwriting
Description Although graphomotor difficulties (GD) are present in up to 30 % of school-aged children, the field of GD diagnosis and assessment is not fully explored and several research gaps can be identified. This study aims to explore the impact of specific elementary graphomotor tasks analysis on the accuracy of computerised diagnosis and assessment of GD. We analysed seven basic graphomotor tasks from 76 children (assessed by special educational counsellors and using the handwriting proficiency screening questionnaire for children HPSQ–C). Employing a differential analysis, we observed that the most discriminative tasks are based on combined loops, sawtooth and small Archimedean spiral drawings. Features with the highest discrimination power quantify kinematics, especially in the vertical projection. Using a multivariate mathematical model, we were able to identify GD with 50 % sensitivity and 90% specificity, and to estimate the total score of HPSQ–C with 31 % error
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