A: GPN's owner, Dr. Michael Martin, has been a certified polygraph expert since the 1980's and has been profiled numerous times in the national media.  All our network examiners are screened and must meet certain experience and certification requirements to belong.  While we do screen our examiners carefully, we also rely on customer feedback to determine if there are any problems we should be aware of.  To be honest, over the years some less-than-acceptable examiners have occasionally slipped through the cracks, but those were removed as soon as their shortcomings were discovered.  The Global Polygraph Network is also a member and supporter of the Better Business Bureau which tracks complaints and requires compliance with good business practices.  For more information visit the BBB through our link in the left-hand column of this page.