George,

I see no point in debating the issue of the NAS report, in view of the extensive body of research which is readily available for discerning individuals to view and decide for themselves what Chapter 8 was intended to address.

Reference Link:
http://www.nap.edu.openbook/0309084369/html/167.html

I opine that instrumentation much like the current polygraph instrumentation will prove to be most accurate for use with a GKT/CIT.  Considering the fact that Drew has conducted much research in this area and may be considered more of a neutral third party, maybe he would wish to expound upon the area of utilizing ANS and CNS for the detection of concealed information.