Handwriting analysis, at least in certain forms, is used in civil and criminal court cases, not just for personality tests, of course, but to A: compare points in determining if samples are from the same person and conversely, show forgery, and B: to show degeneration/change of a person's mental state.
Many people try to copy handwriting, but some characteristics are so inherent, it's almost impossible, which is why more than just a signature is needed for any analysis.
There are some standard descriptions in personality analyses, such as a T crossed high is generally optimistic or open letters mean an open mind. But it has been at least gone over in psychology books and is not altogether dismissed as so much 'silliness'.
Besides, it's fun to see how accurate things like this are. Anyone remember 'biographs'?
