Graphology cannot help to determine: Gender: One cannot detect the gender of a person as many males have feminine traits and vice-versa. Age: There can be an immature forty-year-old person and a mature fifteen-year-old person. The handwriting represents the mind and not age.  Left/Right Handed: One cannot understand which hand is used for writing because the brain is the controlling source of it. Nationality: Graphology cannot detect the nationality of an individual. Caste/Religion: Graphology cannot detect the caste, creed, and religion of an individual.