He is known for his research on international migration, social stratification and labor markets.
The grave goods included few weapons and little evidence of social stratification.
This does not, however, prove that social stratification is inevitable.
However, this view of social stratification is central to Marxist theory.
His interests include the relationships between social stratification, public policy and societal problems.
The analysis was based on an empirical study of social stratification.
There are no larger houses that could indicate social stratification.
People with a lower income will generally be a better example of moving up in the social stratification and achieving status.
It is a system of social stratification, and a basis for affirmative action.
Their societies may also have had a somewhat lower level of social stratification.
