These sort of things really bother me, because they cause me a lot of trouble. I am really uncomfortable in front of people, and no matter how honest I am, I am show my discomfort in interacting with people quite a lot. I look around the room while talking to people, I shuffle around, sometimes I sweat just talking about the weather... I have social anxiety obviously, but it's awkward to start a conversation with any…
Yeah, I used to struggle with social anxiety a fair bit, so this is familiar to me. It's true that many liars are anxious, because they're afraid of getting caught. But I became afraid of getting falsely accused, which tended to make me anxious at exactly the same times liars would be. Which in turn would trigger a wave of anxiety about the pattern, making me excruciatingly aware of the whole mess, making me yet more…
I guess they can tell the difference between a socially-anxious perfectionist stressing about giving correct answers and a liar stressing about giving false answers... or the airline is wasting their money by giving this "interview" but ignoring really sketchy answers. Or maybe I did not appear as suspicious as I thought.
Another time I casually broke eye contact with a bus security officer while he was rattling off prohibited items and searching my bag. I've noticed sometimes I subconsciously prefer to focus by looking down and maybe turning an ear toward someone talking about something detailed like this, but this guy seemed to interpret it as a sign that he'd just said something that was in my bag and shouldn't be. He repeated the question once and maybe twice, so this time I stared straight into his eyes as I answered. Maybe it looked like a liar over-compensating, but whatever, he was tossing my bag anyway.