PET Parent Effectiveness Training Author:Dr. Thomas Gordon Parent Effectiveness Training is a proven method to bring parents and their children together and to show parents how to help their children become mature, healthy, happy and loving. The P.E.T system works with children of all ages, from the very young through the rebellious adolescent years. This book and its program have been endorsed by churc... more »hes, schools, youth organizations, and other agencies serving parents and children.« less