Attempts at lie-detection have been around ever since we first deceived - pretty much as soon as humans walked upright. Most countries outside the US have moved on from the polygraph - although, as we reported in June, prosecutors in India are now using electroencephalograms to "prove" guilt, despite the science being bitterly disputed.
- Eye contact has been proven the least accurate thing to watch for...
- Most reliable cues typically come from the voice, in specific, the words..
- Common sense is the lie-buster's best weapon, and affirms that it is aural rather than visual clues that are key.
- Lying taxes the mind.
- It involves thinking about what is plausible. People tend to repeat phrases, give shorter answers, and hesitate more.
- They will try to distance themselves from the lie, So use far more impersonal language.
- Often reduce the number of times that they say words like 'I', 'me', and 'mine'.
- To detect deception, look for aural signs associated with having to think hard