It is highly likley Westerfield did in fact fail the poly since, unlike in screening cases, the police had known about past violent events about that Westerfield would and did lie about. That makes for a much better CQT as the control questions are the CQT's Achilles' heel. Extrapolating this to be a validation of screening poly's with assumed PLT based CQT's is more than a stretch.

-Marty