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Joint Microeconomic Theory & Behavioral Economics Workshop: Leeat Yariv

Wednesday, March 29, 2023 at 4:15pm to 5:45pm

Rockefeller Hall, 104
Central Campus

Leeat Yariv, Princeton University 

The Dynamics of Networks and Homophily

Joint with:  Matthew O. Jackson, Stephen M. Nei, Erik Snowberg


Abstract: We examine friendships and study partnerships among university students over several years. At the aggregate level, connections increase over time, but homophily on gen[1]der and ethnicity is relatively constant across time, university residences, and different network layers. At the individual level, homophilous tendencies are persistent across time and network layers. Furthermore, we see assortativity in homophilous tendencies. There is weaker, albeit significant, homophily over malleable characteristics—risk pref[1]erences, altruism, study habits, and so on. We find little evidence of assimilation over those characteristics. We also document the nuanced impact of network connections on changes in Grade Point Average.


We strongly encourage in-person attendance. According to official Cornell policy, masks are not required but are strongly encouraged. The workshop’s organizing committee strongly urges all in-person audience members wear masks—and we will be doing so—as there are still vulnerable members of our community and we want the Behavioral Economics Workshop to be a comfortable and welcoming place for everyone.


We recognize that there will be Covid-related reasons why people sometimes cannot attend in-person, and thus a remote attendance option will also be available. If you are interested in participating remotely in this workshop, please register at:


Note: Registration is limited to the Cornell community.


Note: If you have previously registered for the Spring 2023 Behavioral Economics Workshop, there is no need to re-register—you will use the same Behavioral Economics Workshop link for the entire semester.

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Event Type

Seminar, Class/ Workshop




economics, EconSeminar, EconBehave, EconMicro

Contact E-Mail

Contact Name

Robin Tilling

Contact Phone



Leeat Yariv

Speaker Affiliation

Princeton University

Open To

Cornell Economics Community (List Serve Members)

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