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Eduncle Best Answer
Interactionism is a theoretical perspective that derives social processes (such as conflict, cooperation, identity formation) from human interaction. It is the study of how individuals shape society and are shaped by society through meaning that arises in interactions.
Human Resource approach recognizes the fact that people are the central resource in any organization and that they should be developed towards higher levels of competency, creativity, and fulfillment.
Productivity which is the ratio of output to input is a measure of an organization's effectiveness. It also reveals the manager's efficiency in optimizing resource utilization. The higher the numerical value of this ratio, the greater the efficiency.
The contingency approach (sometimes called the situational approach) is based on the premise that methods or behaviors which work effectively in One situation fail in another.