When you begin to understand the origins of 'Graphic Expression', you realise the diversity and the academic areas involved. The 'tree of Graphic Expression' clearly shows the related subjects and how with the 'Evolution of Man' created different stages of Graphic Expression until man reached modern day writing. All these subjects are directly sub groups of Graphology and this is because you can trace the 'psychology of man' all the way back to 'petroglyphs'. In the future Graphology will be supported by more precise scientific data which will be provided by biometric data. Graphology is a 'Science' and very diverse in all fields that deal with human life and activity,