As a supplementary method of assessing an individual's personality, tree drawing analysis (TDA) has enhanced and enriched my work as a graphologist, because its methods for interpretation are very similar to those used for handwriting analysis, especially in relation to the symbolism of space. In both techniques movement, form and arrangement are considered to be as important as the quality and depth of strokes and lines.

In handwriting, content and meaning of words convey a message that are not the prime concrn of a graphologist. Style, form and arrangement of letters and words on a page provide valuable information. The structure of the written word is perceived by graphologists as 'frozen' body language. Being able to understand physical gestures, postures and how individuals uses space all adds vital information to what a person really means. Spoken words are not always congruent with a person's body language and the same is true with writing.