This pocket guide contains valuable lessons which provide invaluable insight into the writers thoughts & actions. Self-tests assist you to assure your retention of this science. Information is useful for H.R., landlords, teachers, psychologists, probation/parole, detectives, singles, students, parents and more. Learn about aggression, lying, suicide, drug use, gang graffiti, violent art, and much more! Can you, or those you care about, afford NOT to have this book?.