I think this actually would be a very interesting question for a researcher to tackle…especially who makes it through formation and who doesn’t. Certainly the information exists, considering all the testing candidates go through.
That said, most of that information is held VERY closely guarded, as you’d expect of any psychological testing results. I even tried to get my test results released to a professional psychologist so I could go over it, and learn about myself. I asked several times, and the Order wouldn’t approve it.