I applied for a cybersecurity position with a government agency at Ft. Meade Maryland and proceeded through the interview process including a polygraph exam and psychological evaluation.
A few weeks after the last steps in the process, I was contacted and told that my application was declined because of "unspecified personality issues" with no additional information.
I was pissed. I am a very well known and prominent expert and one of the smarted people in cybersecurity field. I served in the US military and have held security clearances prior.
This proved to me that the polygraph and psychological evaluation processes are a sham.