More proof: being a member of a polygraph 'group' doesn't make one better than a non-member!
Recently, a long-time examiner in northern California conducted a relationship exam on a guy. The guy was the client, and he wanted his girlfriend to know that he had never cheated on her. Examiner is retired law enforcement, and had chosen to not join a polygraph group.
The client passed, no deception indicated.
But client's girlfriend spoke to another examiner, who said that since the client's examiner was not a 'member' of the 'group', there was
"no way he did a good job". He convinced client's girlfriend to hire him to test her boyfriend on the exact same questions.
Results: client again passed.
Remember: an examiner can join a polygraph group the day he or she finishes the training course-- with NO experience required to become a member! Membership is NOT a badge of competence.