[GuiA]

"[...] These findings demonstrate that handwriting is important for the early recruitment in letter processing of brain regions known to underlie successful reading."

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4274624/

Some educators specializing in dyslexia treatment point to research around cursive handwriting being a helpful tool:

http://www.pbs.org/newshour/updates/connecting-dots-role-cur...