This innovative experiential introduction to the field of OD offers a practical managerial approach to improving organizational effectiveness in a changing world. It differs from most OD texts in providing students with: 1) a strong conceptual framework, 2) descriptions of the most current, state-of-the-art approaches, techniques and methodologies for implementing OD programs, 3) current empirical findings, and 4) learn-by-doing behavioral skill simulations for each major stage of an OD program.