Danilo H. Gomes 
Microexpressions Manual [EPUB ebook] 

Body language is one of the most complex and effective studies in psychology and psychiatry. Reading human gesture techniques are present in police investigations, psychotherapy clinics, schools and other related places. While generally being assertive, observing body gestures can provide some confusing and ambiguous information. When dealing with micro facial expressions, the chances of getting it right are very high, in addition, your observation provides more accurate information.