Theory X and Theory Y represent two sets of assumptions about human nature and human behavior that are relevant to the practice of management. Theory X represents a negative view of human nature that assumes individuals generally dislike work, are irresponsible, and require close supervision to do their jobs. Theory Y denotes a positive view of human nature and assumes individuals are generally industrious, creative, and able to assume responsibility and exercise self-control in their jobs. One would expect, then, that managers holding assumptions about human nature that are consistent with Theory X might exhibit a managerial style that is quite different than managers who hold assumptions consistent with Theory Y.

The first section explains the development of Theory X and Theory Y. Second, the effect of Theory X and Theory Y on management functions is discussed. Third is a...