Hello Hair, Sounds like you ae getting on the right track. These books take some finding. Its no coincidence that when Jennifer Harmen took the FBI tests on Lie detection she was better than the pros who said witchcraft is dead. What I found was there was a snippet here a snippet there there is no one book that covers what you want to know. Just a chapter here a ccouple of chapters there. It works out quite expensive so this Helmuth publication should provide a cheap and easy alternative... ; Dazza T is spot on its all in the Psychology books.