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SSRN
The Geographic Spread of Covid-19 Correlates with the Structure of Social Networks as Measured by Facebook
In: NBER Working Paper No. w26990
SSRN
Working paper
The Geographic Spread of COVID-19 Correlates with Structure of Social Networks as Measured by Facebook
In: CESifo Working Paper No. 8241
SSRN
Working paper
Servicer Size in the Mortgage Market
In: Consumer Financial Protection Bureau Office of Research Reports Series No. 19-9
SSRN
The Determinants and Effects of Social Connectedness in Europe
In: CESifo Working Paper No. 8310
SSRN
Working paper
The Determinants and Effects of Social Connectedness in Europe
We use aggregated data from Facebook to study the structure of social networks across European regions. Social connectedness declines strongly in geographic distance and at country borders. Historical borders and unions — such as the Austro-Hungarian Empire, Czechoslovakia, and East/West Germany — shape present-day social connectedness over and above today's political boundaries. All else equal, social connectedness is stronger between regions with residents of similar ages and education levels, as well as between those that share a language and religion. In contrast, region-pairs with dissimilar incomes tend to be more connected, likely due to increased migration from poorer to richer regions. We find more socially connected region-pairs to have more passenger train trips between them, even after controlling for distance and travel time. We also find that regions with a higher share of connections to other countries have higher rates of trust in the E.U. and lower rates of voting for anti-E.U. political parties.
BASE
Social Networks Shape Beliefs and Behavior: Evidence from Social Distancing during the COVID-19 Pandemic
In: Journal of political economy microeconomics, Band 2, Heft 3, S. 463-494
ISSN: 2832-9368
The Social Integration of International Migrants: Evidence from the Networks of Syrians in Germany
In: CEPR Discussion Paper No. DP17174
SSRN
The Social Integration of International Migrants: Evidence from the Networks of Syrians in Germany
We use de-identified data from Facebook to study the social integration of Syrian migrants in Germany, a country that received a large influx of refugees during the Syrian Civil War. We construct measures of migrants' social integration based on Syrians' friendship links to Germans, their use of the German language, and their participation in local social groups. We find large variation in Syrians' social integration across German counties, and use a movers' research design to document that these differences are largely due to causal effects of place. Regional differences in the social integration of Syrians are shaped both by the rate at which German natives befriend other locals in general (general friendliness) and the relative rate at which they befriend local Syrian migrants versus German natives (relative friending). We follow the friending behavior of Germans that move across locations to show that both general friendliness and relative friending are more strongly affected by place-based effects such as local institutions than by persistent individual characteristics of natives (e.g., attitudes to-ward neighbors or migrants). Relative friending is higher in areas with lower unemployment and more completed government-sponsored integration courses. Using variation in teacher availability as an instrument, we find that integration courses had a substantial causal effect on the social integration of Syrian migrants. We also use fluctuations in the presence of Syrian migrants across high school cohorts to show that natives with quasi-random expo-sure to Syrians in school are more likely to befriend other Syrian migrants in other settings, suggesting that contact between groups can shape subsequent attitudes towards migrants.
BASE
Social Networks Shape Beliefs and Behavior: Evidence from Social Distancing During the Covid-19 Pandemic
In: NBER Working Paper No. w28234
SSRN
Working paper
The Determinants of Social Connectedness in Europe
We use de-identified and aggregated data from Facebook to study the structure of social networks across European regions. Social connectedness declines strongly in geographic distance and at country borders. Historical borders and unions—such as the Austro-Hungarian Empire, Czechoslovakia, and East/West Germany—shape present-day social connectedness over and above today's political boundaries and other controls. All else equal, social connectedness is stronger between regions with residents of similar ages and education levels, as well as between regions that share a language and religion. In contrast, region-pairs with dissimilar incomes tend to be more connected, likely due to increased migration from poorer to richer regions.
BASE
Social Distancing During a Pandemic: The Role of Friends
In: CESifo Working Paper No. 8771
SSRN
Working paper