Many of the differences of the four contemporary approaches to management are similar but not the same the ways we can tell them apart are the key features they hold that make them unique in their own ways however closely related still.
Quantitative Management has a bit of variance of the other theories because it deals and relies solely on managerial problems and solutions this theory was designed strictly to fix and address situations within the organization/environments managers to allow them to make better decisions when acting on a problem many times this is not the best way to deal with things because management problems cannot be solved by simple algorithms sometimes
Organizational Behavior is the act of studying how the employee will act under supervision many of the times it will test how the managers treat the employee and how the employee will react to the treatment we think of this one like a mini social experiment in some case
Systems Theory is the one approach that seems to be a bit more pushed away than the others because it relies on outside connections in order to operate systems theory is not one vast system but many subsystems to allow flow to maintain operations, this one however is very unorganized and sloppy compared to the rest of the approaches
Sociotechnical Systems is one of the stranger ones to this list because of how it deals with the environment and more geared to the human aspects of running the business because of the employee is considered highly within this system they make sure the employee is trained on ant interpersonal level and trained direct versus indirect this also allow the owner(s) to ensure that the proper materials are in place to the employee being trained this will allow any faults to arise early creating a better employment environment overall.
Open systems are the act of owning or operating a business that