In theory there is no difference between theory and practice. In practice there is.
There used to be a school of thought that how people felt about work was not an issue. The work was what mattered and managers took the view that getting performance from staff was a straightforward process. You told them what to do, and they did it. Period. And if that was, for some reason, insufficient then it was backed by the power of management; in effect by coercion.
Management by fear still exists. It has its counterpart in every field. For example, in one of the early Bond films, 007 is being pursued by a group of villains whose leader encourages their pursuit with the thought: ‘The man that gets him stays alive.’ ...