In this book, the principles of behavior modification are presented as a set of guidelines for identifying recurrent behavior patterns and are then applied as techniques to change various undesirable behaviors. Progressively more complex steps toward behavior modification and its social influence are cited and illustrated in chapters which deal with (1) the need for systematic procedures when identifying behavior problems, (2) techniques for breaking down the general statement of a problem into a specific list of components in the situation, (3) the concept of positive and negative reinforcement and some elementary ways that reward and punishment affect significant behavior change, (4) explicit and implicit reinforcers, important in communicating respect and liking, (5) such techniques as forced exposure and desensitization, described as means of modifying the environment to further condition behavior, (6) the time and place for employing techniques which change specifically defined behavior, and (7) the principle of applying modification first to those behaviors which are easiest to change. (JB)