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Cities and the Structure of Social Interactions: Evidence from Mobile Phone Data

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  • Büchel, Konstantin

    (University of Bern and CRED)

  • Ehrlich, Maximilian v.

    (University of Bern, CAGE, CRED, and CESifo)

Abstract

Social interactions are considered pivotal to agglomeration economies. We explore a unique dataset on mobile phone calls to examine how distance and population density shape the structure of social interactions. Exploiting an exogenous change in travel times, we find that distance is highly detrimental to interpersonal exchange. We show that, despite distance-related costs, urban residents do not benefit from larger networks when spatial sorting is accounted for. Higher density rather generates a more efficient network in terms of matching and clustering. These differences in network structure capitalize into land prices, corroborating the hypothesis that agglomeration economies operate via network efficiency.

Suggested Citation

  • Büchel, Konstantin & Ehrlich, Maximilian v., 2018. "Cities and the Structure of Social Interactions: Evidence from Mobile Phone Data," CAGE Online Working Paper Series 356, Competitive Advantage in the Global Economy (CAGE).
  • Handle: RePEc:cge:wacage:356
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    4. Kuchler, Theresa & Russel, Dominic & Stroebel, Johannes, 2022. "JUE Insight: The geographic spread of COVID-19 correlates with the structure of social networks as measured by Facebook," Journal of Urban Economics, Elsevier, vol. 127(C).
    5. Bailey, Michael & Farrell, Patrick & Kuchler, Theresa & Stroebel, Johannes, 2020. "Social connectedness in urban areas," Journal of Urban Economics, Elsevier, vol. 118(C).
    6. Stefano Guarino & Enrico Mastrostefano & Massimo Bernaschi & Alessandro Celestini & Marco Cianfriglia & Davide Torre & Lena Rebecca Zastrow, 2021. "Inferring Urban Social Networks from Publicly Available Data," Future Internet, MDPI, vol. 13(5), pages 1-45, April.
    7. Augeraud Veron, E. & Marhuenda, F. & Picard, P.M., 2021. "Local social interaction and urban equilibria," Mathematical Social Sciences, Elsevier, vol. 112(C), pages 72-83.
    8. Theresa Kuchler & Johannes Stroebel, 2022. "Social Interactions, Resilience, and Access to Economic Opportunity: A Research Agenda for the Field of Computational Social Science," CESifo Working Paper Series 9606, CESifo.
    9. Binzhe Wang & Matias Williams & Fábio Duarte & Siqi Zheng, 2022. "Demand for social interactions: Evidence from the restaurant industry during the COVID‐19 pandemic," Journal of Regional Science, Wiley Blackwell, vol. 62(3), pages 830-857, June.
    10. Yusra Ghafoor & Yi-Shin Chen & Kuan-Ta Chen, 2019. "Social Interaction Scaling for Contact Networks," Sustainability, MDPI, vol. 11(9), pages 1-14, May.
    11. Feng Huang & Jie Gao, 2022. "Customer and Tax Avoidance: How Does Customer Geographic Proximity Affect a Supplier’s Tax Avoidance?," Sustainability, MDPI, vol. 14(22), pages 1-30, November.
    12. Behzad Vahedi & Morteza Karimzadeh & Hamidreza Zoraghein, 2021. "Spatiotemporal prediction of COVID-19 cases using inter- and intra-county proxies of human interactions," Nature Communications, Nature, vol. 12(1), pages 1-15, December.
    13. Pierre Magontier, Maximilian v. Ehrlich, Markus Schläpfer, 2022. "The Fragility of Urban Social Networks - Mobility as a City Glue -," Diskussionsschriften credresearchpaper38, Universitaet Bern, Departement Volkswirtschaft - CRED.
    14. Kim, Jun Sung & Patacchini, Eleonora & Picard, Pierre M. & Zenou, Yves, 2017. "Urban Interactions," Working Paper Series 1192, Research Institute of Industrial Economics.
    15. Kim, Jun Sung & Patacchini, Eleonora & Picard, Pierre M. & Zenou, Yves, 2022. "Spatial Interactions," IZA Discussion Papers 15376, Institute of Labor Economics (IZA).
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    More about this item

    Keywords

    Economic Geography; Agglomeration Economies; Social Interactions; Network Analysis; Spatial Sorting JEL Classification: R10; R23; D83; D85; Z13.;
    All these keywords.

    JEL classification:

    • R1 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics
    • R23 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Household Analysis - - - Regional Migration; Regional Labor Markets; Population
    • Z13 - Other Special Topics - - Cultural Economics - - - Economic Sociology; Economic Anthropology; Language; Social and Economic Stratification
    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation

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