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The Dynamics of Networks and Homophily

Author

Listed:
  • Jackson, Matthew O.
  • Nei, Stephen
  • Snowberg, Erik
  • Yariv, Leeat

Abstract

We examine friendships and study partnerships among university students over several years. At the aggregate level, connections increase over time, but homophily on gender 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 preferences, 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.

Suggested Citation

  • Jackson, Matthew O. & Nei, Stephen & Snowberg, Erik & Yariv, Leeat, 2023. "The Dynamics of Networks and Homophily," CEPR Discussion Papers 17809, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:17809
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    Cited by:

    1. is not listed on IDEAS
    2. Antonio Cabrales & Lorenzo Ductor & Ericka Rascon-Ramirez & Ismael Rodriguez-Lara, 2025. "Gender Stereotypes and Homophily in Team Formation," Working Papers DTE 648, CIDE, División de Economía.
    3. Florian Mudekereza, 2025. "Collective Intelligence in Dynamic Networks," Papers 2502.12660, arXiv.org, revised Jun 2025.
    4. Minahil Asim & Ronak Jain & Vatsal Khandelwal, 2024. "Great expectations? Experimental evidence from schools in Pakistan," ECON - Working Papers 454, Department of Economics - University of Zurich.
    5. Nicolas Bonneton & Christopher Sandmann, 2023. "Non-Stationary Search and Assortative Matching," CRC TR 224 Discussion Paper Series crctr224_2023_465v2, University of Bonn and University of Mannheim, Germany, revised Feb 2025.
    6. Ductor, Lorenzo & Prummer, Anja, 2024. "Gender homophily, collaboration, and output," Journal of Economic Behavior & Organization, Elsevier, vol. 221(C), pages 477-492.

    More about this item

    Keywords

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    JEL classification:

    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
    • I21 - Health, Education, and Welfare - - Education - - - Analysis of Education
    • J15 - Labor and Demographic Economics - - Demographic Economics - - - Economics of Minorities, Races, Indigenous Peoples, and Immigrants; Non-labor Discrimination
    • J16 - Labor and Demographic Economics - - Demographic Economics - - - Economics of Gender; Non-labor Discrimination
    • Z13 - Other Special Topics - - Cultural Economics - - - Economic Sociology; Economic Anthropology; Language; Social and Economic Stratification

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