Group size affects racial makeup of friend groups

Larger settings seem to promote segregation, simulation finds

By Rachel Ehrenberg, 17:52 PM April 15, 2013

Being able to choose friends from larger populations discourages friendships with people from other races, finds a study examining the mathematical underpinnings of self-seeking behavior and group size. The results suggest that activities that give people from different backgrounds the opportunity to work together in the classroom can promote multicultural friendships among students.

People often do self-segregate, says Stanford’s Matthew Jackson, an expert in social economics and networks...

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