Party uses polygraph to assert innocence in civil

[Mr._Ed]

Civil Suit a party hired his own polygraph examiner to "prove" innocence.   What information and documents should be requested from the examinor i.e. machine used, questions asked etc. to better understand the procuedures used and relaibility.  
Thnks.    

[George W. Maschke]

Mr. Ed,

Polygraphy has no scientific basis whatsoever. No matter how experienced the operator, no matter the questions asked, or the instrument used, polygraph chart readings are simply unreliable and are proof of nothing. You'll find the reasons for this explained in Chapter 1 of The Lie Behind the Lie Detector and the sources cited there.

Moreover, because a party to a lawsuit can go from polygrapher to polygrapher until he/she "passes" one, while keeping the results of any "failures" secret under terms of attorney/client privilege, such party-submitted polygraph results actually have negative diagnosticity.