Over my 30+ years of interviewing I’ve made thousands of small observations of human behavior that have proven useful when trying to get to the truth. At times, and in a given context, they are explainable.  At other times the reasons for these mannerisms/foibles totally elude me – nevertheless they exist, are observable, and may just give you that extra little insight into your subject’s mind.    

Here are some behaviors that will help you identify certain subjects' backgrounds.