Quote:

I would suspect (assuming the facts have you have presented are correct) that the odds on most probable explanation is           that the investigating officer(s) had correctly identified (had strong suspicions relative to other suspects) Westerfield as           the guilty subject before the administration of the various exams.  The influence of investigative bias is very strong and           can lead to either a large number of correct results or a large number of wrong results depending on the nature of that           bias.

anonymous,

Did you listen to the tapes?  Tell me where on those tapes the examiner shows any bias.  If there was any bias, the tapes would reveal it.  That's a typical response from your side of the house,  "The examiner manipulated the test."  That would be easy to prove in this case....so prove it.