With these kinds of tests, which have seemingly absurd questions with obvious desirable and undesirable answers, I have always wondered whether what is being analysed is not the face value answer, but something more nuanced.

For example, people answering questions honestly might answer them slightly differently to people who are lying and trying to get the correct answer.

E.g. To the question "how often do you get angry?", the answer "never" would be (potentially) highly desirable, but probably not honest. Whereas "sometimes" would be honest. So maybe some questions are there only to try and gauge honesty of the answers, so other questions can be interpreted with more confidence.

Maybe the designers of these questionnaires have innocuous-sounding questions that are really a test of whether the candidate is answering honestly, e.g. "Have you ever stayed in your pyjamas all day?" (just a silly example, but hopefully you see what I'm getting at).