A person’s handwriting is as unique as their personality, which makes it tempting to connect the two. Graphology is a fun exercise, especially if you’re testing someone you know, but it has very limited accuracy. If you’re interested in a more scientific basis, learn how forensic investigators compare the handwriting of suspects and ransom notes Your brain guides your hand. Everything put on paper is a result of a two-way circuit between your brain and the motor reflex muscles of your hand. Thus, your handwriting becomes a Polygraph or Oscilloscope read-out of your “complete self.” To you, it’s just handwriting, but to a handwriting analyst, it paints a picture of the person “behind the pen.”