Graphomotor Evolution in the Handwriting of Bengali Children Through Sigma-Lognormal Based-Parameters: A Preliminary Study

Handwriting has a natural evolution throughout child development. It is expected that the higher their educational level, the more fluent their handwriting. This paper is the first study in graphomotor evolution in Bengali children. This study is focused on the handwriting of the first five letters learnt in Bengali (Bangla) schools in Kolkata, India. We selected between three and six participants within three different classrooms and applied the Sigma-Lognormal model to their handwriting by using the iDeLog method. We present conventional and novel parameters extracted from the lognormality analysis of their handwriting. An assessment of extracted parameters is carried out with meaningful statistical differences observed within their handwriting evolution. Our results adds to the growing list of evidence supporting the lognormality principle of graphomotor evolution in children.