The easiest way to quickly gain incredible insight about a person is to ask a question you have discerned should have an easy, rapid, and ready answer.
For example, want to know if a leader is self-centered or others-centered, ask, “Who’s more important to you, your parents or your child(ren)?”
PS. Am acutely aware some readers are not parents. I get it. That fact, though, doesn’t change the overwhelming reality that our species continues because people reproduce offspring. Please take it for what it’s worth.