Phrenology

Body language / handwriting / body shape

None of the above things actually tell you anything about a person's personality. The only way to know someone's personality is to know them personally.

And while we're at it: personality tests are not an accurate measure of personality, and IQ tests are not an accurate measure of intelligence.

And that's why I never visited a hand-reader or fortune teller. They are actually forbidden in some cultures and Religions, you know.
Also, the reasoning behind handwriting analysis can go either way. I was watching Air Crash Investigation the other day and they were trying to identify graffiti in a cockpit to solve the investigation. Although it was not identified it did lead to another lead...
Anyway, the main reason why the whole idea is 'bullshit' is because handwriting styles constantly change. Mind I know this firsthand because I had developed a whole new style just for my 7-page literature essays!*
*Which I don't do anymore because IM DONE WITH ENGLISH

Yeah. And my handwriting changes pretty much every day. My old biology teacher, who was an ex-forensics person said that would be good if I committed a crime

Since this thread pulled up, I've noticed how much my handwriting changes - I guess not every time though - and it makes me question the idea that when you notice something, you become seriously conscious about yourself.
I'll give you a slightly crude example that my biology teacher gave us.
We were just getting ready for class - The section on Human Psychology, btw - and she suddenly blurted out:
"Does your seat feel hard for your butt?" (Or something around those lines)
Suddenly everyone becomes conscious of how their seat feels to their butt.

I guess that proves my point then.