This classic book presents the basic principles of behavior emphasizing the use of preventive techniques as well as consequences naturally available in the home, business, or school environment to change important behaviors. This book, and its companion piece, "Measurement of Behavior," represents more than 30 years of research and strategies in the field of applied behavior analysis. This revised third edition of "Behavior Modification: Basic Principles" has been expanded to provide clearer and more comprehensive examples for the reader. A new section on functional assessment has been added, as well as a step-by-step guide for developing behavior change programs.