It measures self report but who among us does not have some self sabotage, self deceit or "conceit" that can keep us from seeing what is in front of our noses? Other people make comments about us that we don't like and we deny them/"that" problem. Yes, we often know deep down we have a problem but getting it into consciousness where it can be worked on is a different situation isn't it? :-)

I don't find it a straightforward test that one can know what the "correct" answers are so one can appear a certain way like most magazine quizzes contain; too many questions and no way to know what questions are grouped to what "ends". I can't see what I'm "reporting" on the test. It's a bit like a garden maze to me; a maze is some part fun and some part "test" of my navigating/directional skills and memory. This test is "fun" in that sense too, I like testing myself, seeing if I can find my way "out" and get a bit of a consensus of who I think I am and who I present? Isn't that what sanity is about, whether those two match?