The result is a varied picture with interlocking modes of production, but in general these changes have promoted economic and social differentiation.

Other focuses of research are "space, power, and social differentiation" and ethnographic urban studies.

He suggested that the main cause of social differentiation was the increase in population density.

More complexity in an economy leads to professional specialization and thus to social differentiation.

In fact, the social differentiation of crime may vary by age, class, ethnicity, gender, and locality.

This social differentiation was based on the possession of certain technical knowledge, such as astronomy, writing, and commerce.

Also, social differentiation became more pronounced: a small dominant group ruled over the majority of the population.

New noblemen's residences were put up, the middle class built its own houses which showed a marked social differentiation.

He points to urban settlement patterns and their implications for social differentiation.

The theory of social differentiation describes three types of societal relationships.