Graphology is the study and analysis of handwriting especially in relation to human psychology. In the medical field, it can be used to refer to the study of handwriting as an aid in diagnosis and tracking of diseases of the brain and nervous system. The term is sometimes incorrectly used to refer to forensic document examination.

Graphology has been a controversial field for more than a century. Although supporters point to the anecdotal evidence of thousands of positive testimonials as a reason to use it for personality evaluation, most empirical studies fail to show the validity claimed by its supporters.^[1][2]