Final answer:
Douglas McGregor was not a pioneer of behaviorism; he is known for his work on management theories. Pioneers of behaviorism include John B. Watson and B. F. Skinner. McGregor's contributions were largely in the humanistic approach to organizational management.
Step-by-step explanation:
The statement that Douglas McGregor was one of the pioneers of early behaviorism is False. Douglas McGregor is best known for his development of the Theory X and Theory Y concepts, which relate to management and motivation theories rather than the field of behaviorism. Behaviorism was pioneered by psychologists such as John B. Watson, B. F. Skinner, and Ivan Pavlov, who focused on observable behaviors rather than internal mental processes. McGregor's work, on the other hand, was related to the humanistic approach to management, emphasizing that individual behavior at work is influenced by a wide range of factors, including attitudes, needs, and the capacity for creativity.