The MSNBC.com website features a Wall Street Journal article by Ann Davis, Joseph Pereira and William M. Bulkeley titled, "FBI, Customs talk body language" that may be of interest, as attempting to read "body language" is a part of the polygraph process. (See the Department of Defense Polygraph Institute Interview and Interrogation Handbook (5.2 mb PDF) and The Lie Behind the Lie Detector for further reading.)

Interestingly, FBI Special Agent Joe Navarro, who lectures on the subject, tells the Journal, "We believe the study of nonverbal behavior has progressed to such a degree that in capable hands, it is now more accurate than lie-detector tests."

SA Navarro has co-authored an article titled "Detecting Deception" that appeared in the July 2001 issue of the FBI's Law Enforcement Bulletin.