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Before this time agriculture ruled the economy and management was not needed.
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Soon factories jobs were made and management was needed for these workers.
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Henri Fayol developed 14 administrative principles for organizational structure and management.
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Max Weber described a theory to operate an organization in an effective way.
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Frederick Taylor made the scientific theory of management and advocated a scientific study of tasks and the workers responsible for them.
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Frederick Winslow Taylor thought it was not important to consider the feelings and preferences of workers.
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Systems theory was proposed in the 1940's by the biologist Ludwig von Bertalanffy
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A theory in psychology comprising a five-tier model of human needs,
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Douglas McGregor developed two contrasting theories that explained how managers' beliefs about what motivates their people can affect their management style.
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Researchers began studying Contingency Management as an intervention for alcohol use disorder
