BOSTON—Paul R. Lawrence, a renowned sociologist and a pivotal figure in the intellectual history of Harvard Business School who was one of the world's most influential and prolific scholars in the field of organizational behavior, died on Tuesday, Nov. 1, of prostate cancer at the Carleton-Willard retirement community in Bedford, Mass. He was 89. At the time of his death, he was the School's Wallace Brett Donham Professor of Organizational Behavior Emeritus. His research, published in 26 books and numerous articles, dealt with the human aspects of management. In particular, he studied organizational change, organization design, and the relationship between the structural characteristics of complex organizations and the technical, market, and other conditions of their immediate environment.