Working with gangs as a unit, the goal was not only to teach them anger control and other skills, but to do so in such a way that their real-world reference group (the gang) was turned, as much as possible, into a prosocial rather than an antisocial support group.

In addition, the book provides a thorough introduction to the history of gangs, current gang demographics, gang aggression and its etiology, as well as a review an