Akisato Suzuki

Research Projects

Foundations of Evidence-Based Policymaking

Status: in progress

This is a book project. I am developing a coherent research framework for evidence-based policymaking. I am synthesizing the literature on causal inference and counterfactuals, Bayesian statistics, and decision theory.

Robust Statistical Decision Making for Policy and Politics

Status: dissemination stage

This project developed new approaches to understanding and communicating the uncertainty of statistically estimated causal effects. To this end, the project took advantage of Bayesian statistics and decision theory. The project was funded by the Irish Research Council under research grant GOIPD/2018/328.

Publications:

Suzuki, Akisato. 2023. "Uncertainty in Grid Data: A Theory and Comprehensive Robustness Test." Quality & Quantity 57 (5): 4477-4491.

Suzuki, Akisato. 2022. "Policy Implications of Statistical Estimates: A General Bayesian Decision-Theoretic Model for Binary Outcomes." Statistics and Public Policy 9 (1): 85-96.

Working papers:

Suzuki, Akisato. 2024. "Which Type of Statistical Uncertainty Helps Evidence-Based Policymaking? An Insight from a Survey Experiment in Ireland." arXiv:2108.05100v4 [stat.OT].

Suzuki, Akisato. 2022. "Presenting the Probabilities of Different Effect Sizes: Towards a Better Understanding and Communication of Statistical Uncertainty." arXiv:2008.07478v4 [stat.AP].

Programs:

Dornschneider-Elkink, Johan A., and Akisato Suzuki. 2022. rbstgrid: An R Package to Aggregate Grid Data to a Different Cell Size. R package. https://github.com/AkisatoSuzuki/rbstgrid.

Suzuki, Akisato. 2020. "bayesdtm: Bayesian Decision-Theoretic Models to Compute Expected Losses under an Intervention and the Status Quo." R package. https://akisatosuzuki.github.io/bayesdtm.html.

Suzuki, Akisato. 2020. "ccdfpost: Plot a Complementary Cumulative Distribution Function for the Posterior Samples of a Causal Effect." R package. https://akisatosuzuki.github.io/ccdfpost.html.

Public engagement:

Suzuki, Akisato. 2020. "Appreciate Uncertainty around Statistical Estimates in Policy Research." PublicPolicy.ie, December 15.

Suzuki, Akisato. 2020. "New R Packages to Evaluate the Statistical Uncertainty of Causal Effects More Informatively." The Connected_Politics Blog, September 14.

Citizens, Leaders, and War

Status: finished

This was more a collection of related papers than a single research project, which explored relationships among citizens, leaders, and political violence and conflict behavior.

Publications:

Suzuki, Akisato, Djordje Stefanovic, and Neophytos Loizides. 2021. "Displacement and the Expectation of Political Violence: Evidence from Bosnia." Conflict Management and Peace Science 38 (5): 561--579.

Suzuki, Akisato. 2018. "Audience Costs, Domestic Economy and Coercive Diplomacy." Research & Politics 5 (3): 1-7.

Nationalism, Rivalry, and Revisionist State Behavior: A New Theory and Empirics in the Post-WWII Era (PhD thesis)

Status: finished

Drawing on theories of nationalism and interstate rivalry, the thesis develops a new theory of nationalistic rivalry, i.e., a specific type of rivalry where dispute-prone states perceive each other as threatening and competing enemies due to a nationalist issue. Building on original data of nationalistic-rivalry dyads from 1946-2001, the thesis examines the validity of nationalistic rivalry theory through the combination of large-N statistical analysis and small-N case studies. It finds that nationalistic rivalry significantly increases the probability of revisionist foreign policy, and thwarts the effect of well-known conflict-mitigating factors. The literature has found that nationalism is a major cause of conflict. However, it is little known whether nationalism in the context of interstate politics increases revisionist state behavior specifically. While revisionist states have often been nationalistic (e.g., Imperial Japan or Milosevic Serbia), nationalism is not always revisionistic (e.g., the UK at the time of the Falklands War). What conditions cause nationalism to be a force of revisionist behavior? The thesis answers this question by explaining how nationalist politics could lead the state specifically to revisionist behavior. The major findings of the thesis are: (1) an ethnically heterogeneous society, political instability, and incongruence between ethnonational and state boundaries raise the likelihood of nationalistic rivalry; (2) nationalistic rivalry disproportionately increases revisionist behavior through the nationalist mobilization of society, in contrast to other rivalries and non-rivalries; (3) nationalism motivated by transborder ethnic groups is more revisionist-prone than nationalism framed by territorial statehood, only in dyads where the former targets the latter; (4) nuclear deterrence does not reduce the probability of revisionist war within nationalistic rivalry contrary to conventional nuclear deterrence theory; and (5) joint democracy, economic interdependence, and intergovernmental organizations do not decrease revisionist behavior within nationalistic rivalry.

Publications:

Suzuki, Akisato. 2019. "Ethnicity, Political Survival, and the Exchange of Nationalist Foreign Policy." International Interactions 45 (1): 54-79.

Suzuki, Akisato. 2019. "The Nationalist Interpretation of Nuclear Deterrence: Evidence from the Kargil War." International Politics 56 (1): 70-86.