This book is a decent guide to decoding body language (including, but not limited to, deception): http://www.amazon.com/What-Every-BODY-Saying-Speed-Reading/dp/

This book is a decent guide to decoding body language (including, but not limited to, deception): http://www.amazon.com/What-Every-BODY-Saying-Speed-Reading/dp/0061438294/ http://www.amazon.com/What-Every-BODY-Saying-Speed-Reading/d... The author's approach is that you must observe a "baseline" of what is normal behavior for an individual in order to accurately read body language. He suggests looking for deviations from normal behavior along with clusters.