Bennis, one of the fathers of modern management theory and leadership studies, passed away July 31 at the age of 89. Warren , a dear friend and colleague of mine at the University of Southern California , was a key intellectual force driving a more human approach to leadership, involving flatter pyramids and collaborative work styles. A Forbes columnist referred to Warren as the dean of leadership gurus two decades ago. As author or co-author of some 30 books, including On Becoming a Leader and Leaders : Strategies for Taking Charge, he influenced and inspired a generation of leaders and scholars. After serving with distinction in World War II, he studied at progressive Antioch University, came under the mentorship of pioneering management figure Douglas McGregor, and went on to create an intellectual justification for democracy as the most effective form of governance. His work at MIT in the 1960s on group behavior foreshadowedand helped bring abouttodays headlong plunge into less hierarchical, more democratic and adaptive institutions, private and public, bestselling leadership expert Tom Peters wrote in 2000.Warren and his colleagues ran experiments suggesting that, while hierarchies were the most efficient and effective way of dealing with simple tasks, democratic and collaborative groups were more efficient and effective in dealing with complex tasks.
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