Disasters, Migration, and Violence (DMV) Lab
Principal Investigators: Sara Mitchell and Elise Pizzi
Department of Political Science, University of Iowa
Welcome to the Disasters, Migration, and Violence (DMV) Lab Webpage! Meet our research team!
Natural disasters like earthquakes, floods, and droughts have become more frequent in recent decades and threaten to displace as many as one billion people by 2050. Research connecting climate shocks, disasters, and civil conflicts reaches divergent conclusions about the conditions under which environmental shocks lead to political violence. Our NSF funded project explains these disparate findings by examining how government policy responses intervene in the disaster-conflict relationship. We develop a typology of government policy responses, including relocation of affected individuals, restrictions on movement, reconstruction of damaged areas, and regulations of third-party disaster relief. We theorize that political violence occurs more often when governments 1) restrict movement of disaster affected populations, 2) restrict third party actor aid efforts, 3) give aid unequally to politically favored areas, 4) rely on decentralized disaster management strategies; and 5) when pre-disaster remittances are small.
Our lab is working on the creation of a new dataset on government responses to disasters, focusing on geophysical, meteorological, hydrological, and climatological disasters for each country (1900-present). Using the disaster as the unit of analysis, we compile UN OCHA reports, news stories, and policy reports to generate post-disaster chronologies (3+ years) for each event. We code a variety of variables (e.g., disaster policy type, timing, scope, scale, actors, third-party restrictions). We will use this information to evaluate how government disaster responses influence the relationship between disasters, migration, and political violence.
Call for Research Assistants
If you are interested in working for the DMV Lab (credit or pay options) in the 2025-2026 academic year, please email Profs. Mitchell and Pizzi..Current Research Papers
Lappe, Mitchell & Pizzi: "Border Disputes as Potential Barriers to Disaster Response". Presented at EPSA 2024 and APSA 2024.
Mitchell, Pizzi, & Wu: "Reducing Post-Disaster Conflict Risk through Labor and Diaspora Networks." Will be presented at EPSA 2025.
Publications
Mitchell, Sara McLaughlin and Elise Pizzi. 2021. "Natural Disasters, Forced Migration, and Conflict: The Importance of Government Policy Responses." International Studies Review 23(3): 580-604.
Mitchell, Sara McLaughlin, Elise Pizzi, Carly Millerd, and Jeongho Choi. 2024. "Does Government Response to Natural Disasters Explain Violence? The Case of the Sendero Luminoso and Conflict in Peru." Social Science Quarterly 1–12. Replication adminlevel1dataset, adminlevel2dataset, adminlevel3dataset, Stata do file
Mitchell, Sara McLaughlin and Elise Pizzi. 2024. "Patterns of Government Disaster Policy Response in Peru." World Development 182: 106707. Replication dataset1, dataset2, and Stata do file.
Binici, Simal, Jeongho Choi, Sara McLaughlin Mitchell, and Elise Pizzi. 2025. "A Text Analysis of News Media Framing of Government Response to the 2023 Türkiye-Syria Earthquake." Journal of Contingencies and Crisis Management. 33: e70023.