Marshall Sashkin is professor emeritus of human resource development at the George Washington University. He teaches graduate courses in the area of management and organization development, leadership, consulting skills, and research design and methods. Marshall received his bachelor’s degree in psychology from the University of California, Los Angeles, and earned his Ph.D. in organizational psychology from the University of Michigan in 1970. Since then he has conducted research, taught at several universities, and consulted with numerous public and private sector organizations (including the American Red Cross, TRW, GE, and American Express). From 1979 to 1984 he was professor of industrial and organizational psychology at the University of Maryland. For nine years after that he served as senior associate in the Office of Educational Research and Improvement, the research application arm of the United States Department of Education. In that position he developed and guided applied research aimed at improving the organization and management of schools. Marshall has authored or co-authored more than 50 research reports and over a dozen books, including Leadership That Matters (with Molly Sashkin, Barrett-Koehler, San Francisco, 2003).