What is graphology?

Graphology is the art of reading character from handwriting.
Source Graphology or How to read Character from Handwriting by Simmon Arke American Institute of Graphology 1903.

Graphology, sometimes called handwriting analysis, is the study of handwriting with the aim of revealing the character and personality of the writer and his or her strengths, weaknesses and abilities.
Source The elements of graphology by Barry Branston a founder-member of the Graphology Society.

MERRIAM-WEBSTER DICTIONARIES definition of graphology: the study of handwriting especially for the purpose of character analysis.

Watch the video to understand the mind to hand correlation. https://www.youtube.com/embed/bAbQUO9x_8g?