Interesting stats: On Lie Detection machines

Polygraph interrogations reveal accuracy rates running from a dismal 25 percent to highs of around 90 percent (Ford, 1996; Saxe, 1994).

The polygraph exam, as typically conducted in the field by poorly trained interrogators, is a poor device for lie detection (Honts, 1994). A new approach to the technological assessment of deception measures brain waves instead of physiological arousal.

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