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"Let Me Hear Your Handwriting!" Evaluating the Movement Fluency from Its Sonification
Jérémy Danna1, Vietminh Paz-Villagrán1, Charles Gondre2
1Laboratoire de Neurosciences Cognitives, LNC, UMR 7291, FR 3C FR 3512, CNRS-Aix-Marseille Université, 13331 Marseille Cedex 3, France.
Plos One
|June 18, 2015
Summary
Auditory perception of handwriting movement, through sonification, can effectively assess writing quality. This method proved more relevant than visual inspection for identifying dysgraphic handwriting.
Area of Science:
- Neuroscience
- Human-Computer Interaction
- Educational Psychology
Background:
- Handwriting quality is typically assessed visually by legibility, neglecting the movement dynamics.
- Sonification, the use of sound to represent data, offers a novel approach to perceive movement-based information.
- Meaningful sounds linked to handwriting could potentially enhance the perception of writing quality.
Purpose of the Study:
- To evaluate the feasibility of judging handwriting quality through the auditory perception of sonified movement.
- To compare auditory evaluation with traditional visual assessment, particularly for dysgraphic handwriting.
- To explore the impact of listener knowledge (implicit vs. explicit) on the accuracy of auditory handwriting assessment.
Main Methods:
- Samples of handwriting from children with dysgraphia, proficient child writers, and adult writers were collected using a graphic tablet.
- Pen velocity, fluency, and axial pressure were sonified into audio files.
- Adult listeners judged handwriting quality based on audio files under implicit and explicit conditions, and results were compared to visual evaluations.
Main Results:
- Under implicit auditory conditions, two-thirds of listeners could differentiate between the three writer groups.
- In the explicit condition, all listeners rated dysgraphic handwriting lower than proficient writers.
- Auditory evaluation demonstrated higher relevance than visual evaluation for assessing dysgraphic handwriting.
Conclusions:
- Handwriting sonification is a viable tool for assessing writing quality, offering insights into movement dynamics.
- This auditory approach can complement traditional visual assessments, providing therapists with an additional diagnostic dimension.
- Sonification holds promise for objective and nuanced evaluation of handwriting, especially for individuals with writing difficulties like dysgraphia.
