Can Two Questions Really Unmask a Liar?
There is no foolproof pair of questions that can reveal whether someone is lying. Popular claims about specific questions, eye movements, avoiding eye contact, or body language aren’t reliable ways to detect deception.
However, two questions can encourage someone to give a more detailed and checkable account:
“Can you walk me through exactly what happened, from the beginning?”
“What evidence or details could help me verify what you’re telling me?”
Pay attention to consistency and independently verifiable facts, rather than whether the person looks nervous. Honest people can be anxious, avoid eye contact, forget details, or become defensive—especially when they feel accused.
A better approach
If something important is at stake, ask open-ended questions, listen without constantly interrupting, and compare the account with objective evidence when available. Don’t treat a single behavioral cue as proof of lying.
Bottom line: There is no magic “two-question lie detector.” The most reliable way to establish whether a claim is true is corroborating evidence, not body-language tricks.
