According to the Davis-Moore thesis, social stratification is required to encourage "quality, productivity, and efficiency," as well as to provide people with something to aim for.
The Davis-Moore thesis suggested that social stratification represents the unequal worth of different types of work. It was written by Kingsley Davis and Wilbert Moore.
Certain societal responsibilities are more valued than others, implying that qualified persons who occupy those positions will be paid more.
They argued that compensating employees for doing more important job motivates them to work harder and longer.
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