From Science Daily:
Science Daily (Nov. 2, 2009) — Many of the security tools used by national governments lack scientific underpinning. This was posited by a team of thirteen international behavioural scientists, including Bruno Verschuere and Geert Crombez (Ghent University), in a recent publication in the Open Access Journal of Forensic Psychology.
The team denounces the current situation regarding the use of tools and methods to protect national security.
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My Comment: This is a small study, but its conclusions are disturbing and disheartening when one realizes the amount of monies and energies that have gone into making these procedures work in the first place.