Quickfix,


Quote:

Ridgway is a psychopath,  and as competent examiners know, a psychopath should never be administered a polygraph.  They are not candidates for valid results.

Although there are operational/academic polygraph believers (e.g., http://data.psych.udel.edu/rsimons/PSYC467/Raskin,%20Hare,%201978.pdf) who would say that a psycho/sociopath can be successfully polygraphed for reasons beyond this thread, the issue is really not psychopath vs. normal, but science vs. no-science.  It is not the least bit surprising that polygraphy got it wrong and that molecular biology (DNA testing) solved the matter...