Cainkane1
Philosopher
I was reading about graphology and your handwriting is supposed to reveal your personality. Is this true or woo or a bit of both?
some types of illness or psychiatric conditions can be guessed from handwriting at higher than chance levels.

I used to have students try to design a study to test graphology as part of a research methods class because there are so many issues to consider that it makes a good exercise in experimental design.
Graphologists claim that they don't use the content of the writing. But they also say that the content cannot be standardised by having everyone copy a passage, because analysis of copied writing doesn't work.
This means that you have to control for content in any test, but not by having everyone copy the same passage. Any naturally produced sample (even a shopping list) has some content clues which might allow guesses about personality.
You can test whether personality can be inferred equally well from typed transcripts of the materials the graphologists are given. Then you need to have appropriate people to do the content-only control (ie you need to make sure that these people are just as good at judging personality from it's content as graphologists are). Otherwise the graphologists could do better, but just because they are better at guessing personality from content rather than analysing it from handwriting. You can't measure this by seeing how well the graphologists do with typed transcripts, because obviouly they would have no motivation to try to do well in with these (since it would undermine their own claims).
That's an interesting problem.
Would it work if people were orally told what to write? Not copied off another paper, but instructed to write out a specific passage?
I think the general requirement is often that the content of the writing cannot be dictated to the writer by any means.
Does this include vague suggestions like "re-tell the story of the Three Little Pigs"?
Maybe a passage everyone knows by heart---the Pledge of Allegiance, or "Mary had a little lamb", or something.Would it work if people were orally told what to write? Not copied off another paper, but instructed to write out a specific passage?
Reminds me of the Russian psychics who, when shown a picture of serial killer Ted Bundy, said he looked like a fine young man but failed to detect his "darker side."I saw an example of a graphologist correctly identifying a serial killer by their handwriting once.
Correct assignments were made for 65% of the scripts, significantly more than chance expectation, with apparent consistency over the various subgroups and between graphologists. A control group of assessors, using typed versions of the scripts, performed significantly worse, with 54% successes, consistent with chance expectation. A second control group of lay assessors, using the handwritten scripts, had intermediate results, with 59% successes. It is suggested that the graphologists, while showing some discriminating ability, failed to substantiate claims made on their behalf