MOVING THE YOUTH DEVELOPMENT MESSAGE: TURNING A VAGUE IDEA INTO A MORAL IMPERATIVE Peter L. Benson and Karen Pittman THE CONTAGION OF AN IDEA In the past fifteen years, countless programs, agencies, funding initiatives, profes sionals, and volunteers have embraced the term "youth development. " Linked more by shared passion than by formal membership or credentials, these people and places have contributed to a wave of energy and activity not unlike that of a social movement, with a multitude of people "on the ground" connecting to a set of ideas that give sustenance, support, and value to...