Research

Job Market Paper

Mobility and Mobilisation: Railways and the Spread of Social Movements  [link]
Abstract

How do reductions in interaction costs shape the diffusion of social movements? In this paper, I use a natural experiment from Swedish history to answer this question. During the thirty-year period 1881-1910, Swedish society underwent two transformative developments: the large-scale roll-out of a national railway network and the nascence of social movements which came to dominate social and political spheres well into the twentieth century. Using event-study and instrumental variables methodologies, I document the causal impact of proximity to the newly constructed railway network on the spread and growth of membership in these social movements. Well-connected municipalities were more likely to host a local movement organisation and saw more rapid growth of membership per capita. The movement of individuals is key: results are driven by passenger arrivals into connected municipalities, not freight arrivals. I implement a market access framework to uncover the mechanisms underlying this result: by reducing least-cost distances between municipalities, railways intensified the influence exerted by neighbouring concentrations of membership, thereby enabling social contagion. I explore the interrelationships between movement types, and show that railway access reduced levels of strategic substitutability between different groups.

Working Papers

Creating ‘Us and Them’: Racial Propaganda, Insularity and Right-Wing Ideology [link]
Abstract

What determines the efficacy of identity-based propaganda, and how long-lasting are its effects? To shed light on these questions, I study the impact of the Swedish State Institute for Race Biology’s popularisation of race biology on right-wing ideology in the short and long run. In a popular book edition of its systematic classification of the Swedish population according to “Nordic purity”, the Institute identified particularly “pure” areas of the country. Implementing a differences-in-differences strategy, I document the effect of the publication on right-wing ideology: following the publication, election districts of above-median “Swedishness” exhibit a 3.4 percentage point relative increase in the vote share of right-wing parties. This effect is concentrated in areas with little immigration, suggesting that insular communities may be particularly susceptible to this type of racial rhetoric. Using data on library funding as a proxy for the accessibility of the book, I show that districts with good access drive the results. Media is critical in propagating the effect: the “Swedishness” effect is present only in regions with high levels of exposure to race-biological news media. I corroborate my findings with data on the complete incoming correspondence of the Institute, showing that above-median “Swedish” regions become more directly involved with the Institute after the publication of the book. Finally, the rightward turn appears to persist over time: present-day municipalities in formerly above-median “Swedish” regions exhibit a higher relative vote share for the Sweden Democrats, a populist party with roots in the extreme right.

Wars, Local Political Institutions and Fiscal Capacity: Evidence from Six Centuries of German History [CAGE Working Paper No. 395, link]
with Sascha O. Becker, Andreas Ferrara and Luigi Pascali
Abstract

We study the effect of warfare on the development of state capacity and representative institutions using novel data on cities and territories in the German lands between 1200 and 1750. More specifically, we show that cities with a higher conflict exposure establish more sophisticated tax systems, but also develop larger councils, councils that are more likely to be elected by citizens, and more likely to be independent of other local institutions. These results are consistent with the idea of a trade-off between more efficient taxation and power sharing proposed in earlier work. We make headway on establishing a causal role of wars by using changes to German nobles’ positions within the European nobility network to instrument for conflict.

Work in Progress

Poor Relief and Crime: Evidence from the New Poor Law
with Martina Miotto