I haven’t had to take one of these tests before, but from the sound of it the test assumes that anyone with an abnormally strong sense of ethics must be a liar. That strikes me as a pretty serious flaw.
Two examples come to mind:
My brother and I were once interviewed for a twin study. One of the questions was something like “Have you ever told a lie?” (Presumably, this was meant to be a “B.S. detector” sort of question.) My brother told me afterwards that he had a hard time with that question, eventually answering “Maybe I have at some point, but I can’t recall any such incident.” The thing is, I’ve known him since the womb and I can’t remember him ever telling a lie either. He’s honest to the point of being annoying. And yet if some company used that sort of test they’d probably flag him as “dishonest”.
The other story I’m thinking of is the time one of my wife’s friends interviewed for a job with the F.B.I. (or maybe it was the C.I.A., I can’t remember). Apparently, they wouldn’t believe her when she said she’d never smoked pot. They told her that in order to get the job she’d have to sign a statement admitting to smoking pot in the past but saying she wouldn’t ever do it again. She guessed this was some sort of test of her honesty (after all, it’s not like every American has smoked pot), and she refused to sign the form. Unfortunately, she guessed wrong.