And then when looking at who is publishing all the "science" behind the PI tests, I mostly found the company that is selling it. That literally made the entire thing worthless in my opinion. If we believe the salemen from big corpo, then sugar is good for your health, cigarette doesn't cause cancer, lead in gas is safe, etc.
And the fact that anyone with a brain can easily manipulate their own answer by not being honest with what they think is the final nail for me. Others said this doesn't happen, but I took a look at the test once and with some self suggestion effort, I could completely change how the test ranked me. So to me, whoever say they need to run this test to evaluate their candidate is an absolute incompetent buffoon to me.