Human relations movement refers to the researchers of organizational development who study the behaviour of people in groups, particularly in workplace groups and other related concepts in fields such as industrial and organizational psychology. It originated in the 1930s' Hawthorne studies, which examined the effects of social relations, motivation and employee satisfaction on factory productivity. The movement viewed workers in terms of their psychology and fit with companies, rather than as interchangeable parts, and it resulted in the creation of the discipline of human relations management.