Daniel Mangan, M.A. -- Polygraph Consultant and Certified Examiner

Recommended Reading

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Polygraph testing is a very serious matter.
I strongly recomend that you educate yourself on the risks, realities and limitations of
polygraph testing -- as well as the differing opinions on polygraph efficacy --
by visiting the web sites linked on this page.
Please feel free to contact me if you have any questions.


The polygraph industry's leading trade organization, the American Polygraph Association, states their official position on polygraph accuracy here

A diametrically opposing view on polygraph validity and legitimacy, this site also contains the largest compendium of polygraph information publicly available, as well as an active user forum



A frank and cautionary summary of polygraph testing as seen by skeptical social scientists from the American Psychological Association


 The landmark 2003 federal study "The Polygraph and Lie Detection," published in its entirety by the National Research Council