“Can science help us determine if someone is deceiving us?
“The very high-tech stuff we rely on includes functional magnetic resonance imaging, magnetic encephalography, and some very, very sophisticated electroencephalographyâ€”one of the techniques used to test so-called guilty knowledge. Thatâ€™s where you expose somebody to something and they have guilty knowledgeâ€”theyâ€™ve seen it before, letâ€™s say. You can tell by looking at their brain response, up to a point, whether their brain has seen that thing or not. You say, well, do you know X, or have you seen X, and they say no, but their brain says otherwise.”
The Science of Sniffing Out Liars, An interrogation expert spills his secrets. By Susan Kruglinski, Discover, July 28, 2008
Being lazy and honest are the only way to fly.