Doing a family geneaology project, I note my grandfather's handwriting is similar to my brother's. Is it genetic? I did short research and found this enlightening piece, posted here in what is significant part for me. Link is here.
In the past the study of an individual's personality by means of his handwriting was usually regarded with a great deal of scepticism. What was put in doubt was the very existence of a sound correlation between a single subject's distinctive character and his own personal way of writing (with its symbolisms).
Through the years, preconceived ideas and incredulity have little by little given way to reasonable persuasion, mostly as a result of several empirical validations and of scientific trials proving the actual relation between a given individual (with his psyche and soma unity) and his own graphic expression. ....now graphology too is apparently experiencing freedom from long standing prejudices, thanks also to the progresses in the scientific studies linking the evolution of senile neurologic illnesses to typical patterns of handwriting deterioration.
...in the everyday act of writing a note to a friend or in the formal signing of a document we all implicitly take for granted that that graphic representation, with its cluster of typical peculiarities, portrays in short just and exactly ourselves, thus setting each of us apart from any other person; if we gave no implicit acknowledgement to the univocal relationship between any individual person and his own handwriting, one would not understand the reason why we all daily attribute so great an identificative power to our signature as to entrust to that specific written symbol the testimony of authenticity of a contract, of a check, of a letter, of any whatsoever document; still this is what happens daily. In other words, if one would get to deny the actual existence of a real relation (with close interconnection) between an individual and his own typical handwriting, we should ask ourselves why each day millions of people carefully sign at the foot of a document, thus convinced of bestowing to that paper the distinctive brand of their own doing.
Posted from Broadside: Taking Aim at the Social Revolution