Currently a professor of Educational Psychology and Technology in the Rossier School of Education at the University of Southern California, where he directs a doctoral program in Human Performance at Work. He was the 2002 recipient of the prestigious Thomas F. Gilbert Professional Achievement Award by the International Society for Performance Improvement. He has served as a performance improvement specialist in a great variety of organizations in North and South America, Europe, Africa, and Asia in the past two decades. For two years he served as Program Board Member and lecturer in Organizational Psychology at Dublin City University in Ireland, and he is Professeur Associ� at the… Universit� de Montr�al, Facult� des sciences de l �ducation in Montr�al, Qu�bec. He is president of Atlantic Training Inc., a consulting company with offices in Los Angeles and Dublin. Clarks interest is in the performance of people and technology in culturally diverse, multinational organizations where complex knowledge work is accomplished in a constantly changing environment. He is the author of more than 150 published books, chapters, articles, and monographs, including, most recently, Learning from Media: Arguments, Analysis, and Evidence (Information Age Publishing Inc., 2001), which sold out its first print run in advance of the books release. He is an Educational Psychologist who is an elected Fellow in the American Psychological Association, the American Psychological Society and the American Association of Applied Psychology.