Details of the Researcher

PHOTO

Masataka Harada
Section
Graduate School of Information Sciences
Job title
Associate Professor
Degree
e-Rad No.
30738810

Research History 6

  • 2024/04 - Present
    Tohoku University　Graduate School of Information Sciences Department of Human-Social Information Sciences　Associate Professor

  • 2016/04 - 2024/03
    Fukuoka University　Faculty of Economics　Associate Professor

  • 2021/09/01 - 2022/08/31
    Harvard University　Program on U.S.-Japan Relations, Weatherhead Center for International Affairs　Associate

  • 2014/04/01 - 2016/03/31
    National Graduate Institute for Policy Studies　Urban Policy Program　Assistant Professor

  • 2012/08/01 - 2014/03/31
    New York University　Steinhardt School of Culture, Education, and Human Development　Postdoctoral Research Scientist

  • 2009/09/01 - 2011/01/31
    University of Chicago　Harris School in Public Policy　Lecturer

Show all Show first 5

Education 4

  • University of Chicago　Harris School of Public Policy　Doctoral Program

    2005/09/01 - 2012/06/30

  • University of Chicago　Division of Social Science　Master's Program

    2003/09/01 - 2004/08/31

  • Keio University　Graduate School of Law　Master's Program in Political Science

    2000/04/01 - 2002/03/31

  • Keio University　Faculty of Law　政治学科

    1996/04/01 - 2000/03/31

Professional Memberships 4

  • American Political Science Association

    - Present

  • The Japanese Society for Quantitative Political Science

    - Present

  • 日本政治学会

    - Present

  • 日本選挙学会

    - Present

Research Interests 4

  • Causal Inference

  • Japan (country focus)

  • Electoral Behavior

  • Historical Political Economy

Research Areas 2

  • Life sciences / Healthcare management, medical sociology / Causal Inference

  • Humanities & social sciences / Politics / Political Behavior, Historical Political Economy

Awards 1

  1. The 2022 Kenneth A. Shepsle Prize

    2022/03/04　Journal of Political Institutions and Political Economy　United States

Papers 18

  1. Historical bombings, urban community, and prosociality: Application of the first Internet lab-in-the-field experiment International-journal Peer-reviewed

    Masataka Harada, Ryo Mikami, Natsumi Shimada

    World Development　196　2025/12

    DOI： 10.1016/j.worlddev.2025.107139 　

  2. Impact of Historical Experiences of Defeat on the Public Policy Effectiveness: Evidence from Japan’s largest civil war Peer-reviewed

    Masataka Harada, Yuichi Kubota

    Political Behavior　forthcoming　2025/11/07

    DOI： 10.1007/s11109-025-10099-3 　

  3. Using Cell-phone Mobility Data to Study Voter Turnout International-journal International-coauthorship Peer-reviewed

    Masataka Harada, Gaku Ito, Daniel M. Smith

    Political Behavior　2024/10/30

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11109-024-09975-1 　

    ISSN： 0190-9320

    eISSN： 1573-6687

    More details Close

    Abstract Studies of voting behavior in some settings may be hampered by poor data availability or unsuitably large units of aggregation for reported turnout. We propose and demonstrate a practical big-data solution to these kinds of challenges, using fine-grained cell-phone mobility data on millions of GPS locations for more than 300,000 eligible voters in Tokyo. Our approach uses the geolocations of polling stations, combined with GPS data points recorded on election day and a reference day, to measure patterns in individual-level (but anonymized) voting behavior. We first test the validity of the measure by comparing it to official aggregated data on turnout, and then illustrate its substantive utility with an application exploring the well-known relationship between turnout decisions and the cost of voting, proxied by the distance between a voter’s residence and the polling station. Finally, we discuss the potential limitations of the approach and provide step-by-step instructions for other researchers.

  4. Destruction from Above: Long-Term Legacies of the Tokyo Air Raids International-journal International-coauthorship Peer-reviewed

    Masataka Harada, Gaku Ito, Daniel M Smith

    The Journal of Politics　86　(2)　782-797　2024/02/23

    Publisher: University of Chicago Press

    DOI： 10.1086/726942 　

    ISSN： 0022-3816

    eISSN： 1468-2508

  5. Making Sense of Violence in Semi-Technologized Conventional Civil War: Evidence from Nineteenth-Century Japan Peer-reviewed

    Yuichi Kubota, Gaku Ito, Masataka Harada

    International Interactions　2023

    DOI： 10.1080/03050629.2023.2180501 　

    ISSN： 0305-0629

    eISSN： 1547-7444

  6. Intergovernmental transfers as magnets for low-income people Peer-reviewed

    Masataka Harada, Tetsuya Matsubayashi

    APPLIED ECONOMICS LETTERS　2022/11

    DOI： 10.1080/13504851.2022.2139801 　

    ISSN： 1350-4851

    eISSN： 1466-4291

  7. Distributive Politics and Crime Peer-reviewed

    Masataka Harada, Daniel M. Smith

    Journal of Political Institutions and Political Economy　2　(4)　453-482　2022/02/10

    Publisher: Now publishers inc., Boston

    DOI： 10.1561/113.00000045 　

    ISSN： 2689-4823

  8. War Violence Decreases Long-Term Human Well-Being: The Evidence from the Strategic Bombing to Japan During WWII Peer-reviewed

    Masataka Harada

    International Journal of Community Well-Being　7　(1)　2022

    Publisher: Springer Nature, Switzerland

    DOI： 10.1007/s42413-022-00164-8 　

    ISSN： 2524-5295

  9. Influence of the COVID-19 pandemic on regular clinic visits and medication prescriptions among people with diabetes; retrospective cohort analysis of health care claims International-journal Peer-reviewed

    Toshiki Maeda, Takumi Nishi, Masataka Harada, Kozo Tanno, Naoyuki Nishiya, Kei Asayama, Nagako Okuda, Daisuke Sugiyama, Hiroshi Yatsuya, Akira Okayama, Hisatomi Arima

    Medicine　forthcoming　(29)　e29458　2022

    Publisher: Wolters Kluwer

    DOI： 10.1097/MD.0000000000029458 　

    More details Close

    The aim of this study was to investigate the effect of the COVID-19 pandemic on regular clinic visits among people with diabetes and to elucidate the factors related to visit patterns among these patients during the pandemic. This was a longitudinal study using anonymized insurance claims data from the Joint Health Insurance Society in Tokyo from October 2017 to September 2020. First, we identified patients with diabetes who were fully enrolled in the health plan from fiscal year 2017 until September 2020 and who were regularly receiving glucose-lowering medications (every 1-3 months) from October 2017 to September 2018. We divided follow-up into the pre-pandemic period (October 2018 to March 2020) and the pandemic period (April 2020 to September 2020). A multilevel logistic regression model was used to determine the risks of delayed clinic visits/medication prescriptions (i.e., >3 months after a previous visit/prescription) during the pandemic period. We identified 1118 study participants. The number of delayed clinic visits/medication prescriptions during the pre-pandemic and pandemic periods was 188/3354 (5.6%) and 125/1118 (11.2%), respectively. There was a significant increase in delayed clinic visits during the pandemic (adjusted odds ratio 3.68 (95% confidence interval 2.24 to 6.04, P < .001), even after controlling for confounding factors. We also found a significant interaction between sex and delayed visits; women had significantly fewer clinic visits during the COVID-19 pandemic than men. We clarified the relationship of the COVID-19 pandemic with delays in regular clinic visits and medication prescriptions among people with diabetes. The response to the COVID-19 pandemic differed between men and women.

  10. How do Patients with Chronic Illnesses Respond to a Public Health Crisis? Evidence from diabetic patients in Japan during the COVID-19 pandemic International-journal Peer-reviewed

    Masataka Harada, Takumi Nishi, Toshiki Maeda, Kozo Tanno, Naoyuki Nishiya, Hisatomi Arima

    SSM - Population Health　16　100961-100961　2021/12/10

    Publisher: Elsevier

    DOI： 10.1016/j.ssmph.2021.100961 　

    ISSN： 2352-8273

    More details Close

    How do people change their healthcare behavior when a public health crisis occurs? Within a year of its emergence, coronavirus disease 2019 (COVID-19) has gradually infiltrated our lives and altered our lifestyles, including our healthcare behaviors. In Japan, which faces China across the East China Sea and accepted 924,800 Chinese tourists in January 2020, the emergence and spread of COVID-19 provides a unique opportunity to study people's reactions and adaptations to a pandemic. Patients with chronic illnesses who require regular doctor visits are particularly affected by such crises. We focused on diabetic patients whose delay in routine healthcare invites life-threatening complications and examined how their patterns of doctor visits changed and how demographic, socioeconomic, and vital factors disparately affected this process. We relied on the insurance claims data of a health insurance association in Tokyo. By using panel data of diabetic patients from April 2018 to September 2020, we performed visual investigations and conditional logistic regressions controlling for all time-invariant individual characteristics. Contrary to the general notion that the change in healthcare behavior correlates with the actual spread of the pandemic, the graphical and statistical results both showed that diabetic patients started reducing their doctor visits during the early stage of the pandemic. Furthermore, a substantial decrease in doctor visits was observed in women, and large to moderate reductions were seen in patients who take insulin and are of advanced age, who are at high risk of developing severe COVID-19. By contrast, no differentiated effect was found in terms of income status. We further investigated why a change in pattern occurred for each subgroup. The patterns of routine healthcare revealed by this study can contribute to the improvement of communication with the target population, the delivery of necessary healthcare resources, and the provision of appropriate responses to future pandemics. (299 words).

  11. A flexible, interpretable framework for assessing sensitivity to unmeasured confounding Peer-reviewed

    Vincent Dorie, Masataka Harada, Nicole Bohme Carnegie, Jennifer Hill

    STATISTICS IN MEDICINE　35　(20)　3453-3470　2016/09

    DOI： 10.1002/sim.6973 　

    ISSN： 0277-6715

    eISSN： 1097-0258

  12. Assessing Sensitivity to Unmeasured Confounding Using a Simulated Potential Confounder Peer-reviewed

    Nicole Bohme Carnegie, Masataka Harada, Jennifer L. Hill

    JOURNAL OF RESEARCH ON EDUCATIONAL EFFECTIVENESS　9　(3)　395-420　2016

    DOI： 10.1080/19345747.2015.1078862 　

    ISSN： 1934-5747

    eISSN： 1934-5739

  13. You Have to Pay to Play: Candidate and party responses to the high cost of elections in Japan Peer-reviewed

    Masataka Harada, Daniel M. Smith

    Electoral Studies　36　51-64　2014/07/01

    Publisher: Elsevier

    DOI： 10.1016/j.electstud.2014.06.011 　

    ISSN： 0261-3794

  14. The choice between fixed and random effects

    Zachary Townsend, Sean P.Jack Buckley, Masataka Harada, Marc A. Scott

    The SAGE Handbook of Multilevel Modeling　73-88　2013/01/01

    DOI： 10.4135/9781446247600.n5 　

  15. The Voting Rights Act of 1965 and Strategic Policy Making in the South Peer-reviewed

    Masataka Harada

    STATE POLITICS & POLICY QUARTERLY　12　(4)　456-482　2012/12

    DOI： 10.1177/1532440012451979 　

    ISSN： 1532-4400

  16. Three Essays on Quasi-Experimental Analysis of Local Political Economy Peer-reviewed

    2012/06/01

  17. Distributive Politics and Crime

    Masataka Harada, Daniel M. Smith

    2019

    DOI： 10.2139/ssrn.3392733 　

  18. Sensitivity analysis for unobserved confounder - an introduction - Invited

    Masataka Harada

    Public Choice Studies　(70)　24-44　2018/07/31

    Publisher: Bokutaku Publisher

Show all ︎Show first 5

Misc. 1

  1. 脳梗塞入院患者の再入院予測モデル構築の試み

    西巧, 前田俊樹, 原田勝孝, 香月進

    日本医療・病院管理学会誌　57　2020

    ISSN： 1882-594X

Books and Other Publications 5

  1. Data Analysis for Social Science: A Friendly and Practical Introduction

    2025/01

    ISBN: 9784000616775

  2. Japanese translation of "Quantitative Social Science - an introduction -" Ch.5-8

    Kosuke Imai

    Iwanami Shoten, Publishers　2018/04/24

    ISBN: 9784000612463

  3. Japanese translation of "Quantitative Social Science - an introduction -" Ch.1-4

    Kosuke Imai

    Iwanami Shoten, Publishers　2018/03/13

    ISBN: 9784000612456

  4. The Choice between Fixed and Random Effects in the Sage Handbook of Multilevel Modeling- Part One: Multilevel Model Specification and Inference

    Zac Townsend, Jack Buckley, Masataka Harada, Marc A Scott

    SAGE Publications Ltd.　2013/09/01

    ISBN: 9780857025647

  5. 島根システム概論

    成崇, 原田勝孝

    ハーベスト出版　2001/09/01

    ISBN: 9784938184216

Presentations 65

  1. How Does Military Intervention in Politics Shape Politicians' Policy Preferences? Evidence from a Failed Coup Attempt in Prewar Japan

    Mikihiro Konno, Masataka Harada

    2026/10/03

  2. Reducing Turnout Overestimation in Online Surveys: Integrating Randomized Response Instrument and Indirect Questioning Method

    2026/10/03

  3. Correcting Nonresponse and Social Desirability Bias in Online Surveys International-presentation

    Masataka Harada, Tetsuya Matsubayashi, Ikuma Ogura

    APSA 2026 Annual Meeting (American Political Science Association)　2026/09/03

    More details Close

    Political Methodology session

  4. Can Foreign Aid Pave the Way to Reciprocity? Evidence from Sri Lanka Highway Project International-presentation

    So Morikawa, Masataka Harada, Ryo Mikami

    APSA 2026 Annual Meeting (American Political Science Association)　2026/09/03

  5. How People Judge Retaliation in War: A Cross-National Experiment International-presentation

    Tetsuya Matsubayashi, Masataka Harada, Haruki Kashihara

    JSQPS 2026 Summer Meeting　2026/07/04

  6. Correcting Nonresponse and Social Desirability Bias in Online Surveys

    原田勝孝, 松林哲也, 小椋郁馬

    日本選挙学会2026年度総会・研究会（JAES-E方法論部会）　2026/06/20

  7. True Polling: Simultaneous Correction for Non-Ignorable Nonresponse and Social Desirability Bias

    Masataka Harada, Tetsuya Matsubayashi, Ikuma Ogura

    Japanese Society for Quantitative Political Science 2026 Winter Meeting　2026/01/06

  8. Can Foreign Aid Pave the Way for Reciprocity? Evidence from International Field Experiment on Sri Lankan Highway Project International-presentation

    So Morikawa, Masataka Harada, Ryo Mikami

    Japanese Society for Quantitative Political Science 2026 Winter Meeting　2026/01/06

  9. Benchmarking Randomized Response Instruments: Evidence from an Online Survey International-presentation Invited

    Masataka Harada, Tetsuya Matsubayashi, Ikuma Ogura

    2025 Asian Electoral Studies Conference　2025/10/25

  10. Can Foreign Aid Pave the Way for Reciprocity? Evidence from International Field Experiment on Sri Lankan Highway Project

    So Morikawa, Masataka Harada, Ryo Mikami

    Japanese Political Science Association 2025 Annual Meeting　2025/10/11

  11. Benchmarking Randomized Response Instruments: Evidence from a Japanese Turnout Survey

    Masataka Harada, Tetsuya Matsubayashi

    IPSA 28TH WORLD CONGRESS OF POLITICAL SCIENCE　2025/07/14

  12. Can ODA Transform Donor Countries into In-group Members? Evidence from International Field Experiment on Sri Lankan Expressway Project International-presentation

    Masataka Harada, So Morikawa, Ryo Mikami

    Japanese Society for Quantitative Political Science 2025 Winter Meeting　2025/01/06

  13. War Provokes the Rebel without a Cause in Defeated Territories and Diminishes Policy Effectiveness

    Masataka Harada, Yuichi Kubota

    公共選択学会　2023/12/03

  14. Historical Roots of Policy Non-Compliance: Evidence from Japanese Civil War and COVID-19 Pandemic

    Masataka Harada, Yuichi Kubota

    Japanese Society for Quantitative Political Science 2023 Winter Meeting　2023/01/09

  15. 戦争が人々の向社会性に与える長期的影響の分析：クラウドソーシングによるインタラクティブな経済実験を通じた社会的選好の測定とその活用 (with Natsumi Shimada and Ryo Mikami)

    Masataka Harada

    Annual meeting of Japanese Political Science Association　2022/10/01

  16. Using internet surveys to perform complex interactive economic experiments (with Natsumi Shimada and Ryo Mikami) International-presentation

    Masataka Harada

    Annual conference of American Political Science Association　2022/09/15

  17. Using cell-phone mobility data to study voter turnout (with Gaku Ito and Daniel M. Smith) International-presentation

    Masataka Harada

    Annual conference of Midwest Political Science Association　2022/04/08

  18. Using cell-phone mobility data to study voter turnout (with Gaku Ito and Daniel M. Smith) International-presentation Invited

    Masataka Harada

    International Symposium of Public Administration and Democracy　2022/03/18

  19. Using cell-phone mobility data to study voter turnout (with Gaku Ito and Daniel M. Smith) International-presentation

    Masataka Harada

    The 2022 Winter Meeting of the Japanese Society for Quantitative Political Science　2022/01/10

  20. Using cell-phone mobility data to study voter turnout (with Gaku Ito and Daniel M. Smith) International-presentation Invited

    Masataka Harada

    International Conference of Political Science　2021/12/29

  21. Using cell-phone mobility data to study voter turnout (with Gaku Ito and Daniel M. Smith) International-presentation Invited

    Masataka Harada

    2021 Asian Electoral Studies Conference　2021/10/23

  22. Using cell-phone mobility data to study voter turnout International-presentation

    Masataka Harada, ith, Gaku Ito, Daniel M. Smit

    Annual conference of American Political Science Association　2021/10/02

  23. Using cell-phone mobility data to study voter turnout

    Masataka Harada, ith, Gaku Ito, Daniel M. Smit

    Annual meeting of Japanese Political Science Association　2021/09/26

  24. Destruction from Above: Long-Term Legacies of the Tokyo Air Raids (with some results from Using cell-phone mobility data to study voter turnout) International-presentation Invited

    Masataka Harada

    ISER Seminar Series　2021/07/26

  25. Brief review of the legacy of war violence: the case of the bombing of Tokyo International-presentation Invited

    Masataka Harada

    International Symposium of Politics and Local Governance　2021/05/24

  26. Japan’s Perspective on the Biden Administration and Its Implications for Its Allies and Partners International-presentation Invited

    Masataka Harada

    Symposium on the US Presidential Election and Public Administration　2021/01/14

  27. War increases suicide rates: The evidence from the strategic bombing International-presentation Invited

    Masataka Harada

    Joint Conference between GSPA, SNU and PSIC　2020/02/21

  28. Historical Image Analysis with Machine Learning: Evaluating the WWII Tokyo Air Raid Damages International-presentation

    Gaku Ito, Masataka Harada

    The 3rd Winter Meeting of the Japanese Society for Quantitative Political Science　2020/01/05

  29. Legacy of War on Democratic Participation Legacy of War on Democratic Participation: The long-lasting effects of the air raids in Japan during WWII International-presentation Invited

    Masataka Harada

    2019 Asian Electoral Studies Conference　2019/10/26

  30. Destruction from Above: Long-Term Impacts of WWII Tokyo Air Raids

    原田勝孝, 伊藤岳

    日本政治学会2019年度研究大会　2019/10/05

  31. Historical Image Analysis with Machine Learning: The WWII Raid Damage Evaluation International-presentation

    Ito, Gaku, Harada, Masataka

    Annual meeting of American Political Science Association　2019/09/01

  32. Measuring Destruction from Above: The long-term impact of the WWII air raids in Japan

    Harada, Masataka, Ito, Gaku

    日本選挙学会2019年度 総会・研究会　2019/07/14

  33. Measuring Destruction from Above: The long-term impact of the WWII air raids in Japan Invited

    Harada, Masataka, Ito, Gaku

    日本公共政策学会第23回研究大会　2019/06/08

  34. Measuring Destruction from Above: The long-term impact of the WWII air raids in Japan International-presentation

    Harada, Masataka

    Annual Conference of the Midwest Political Science Association　2019/04/07

  35. On the Community- and Individual-Level Legacies of Indiscriminate Violence: Evidence from the Bombing of Tokyo in the World War II International-presentation Invited

    Harada, Masataka

    Joint Conference between GSPA, SNU and PSIC　2019/02/12

  36. On the Community- and Individual-Level Legacies of Indiscriminate Violence: Evidence from the Bombing of Tokyo in the World War II International-presentation

    Harada, Masataka, Ito, Gaku

    2019 Asian Polmeth Meeting　2019/01/05

  37. Measuring Destruction from Above: Long-Term Effects of the WWII Air Raid Damages on Contemporary Sociopolitical Activities in Japan International-presentation Invited

    Masataka Harada

    2018 Asian Electoral Studies Conference　2018/10/27

  38. Distributive Politics and Crime

    Masataka Harada (Coauthor, Daniel M. Smit

    The 2018 Annual Meeting of the Japan Political Science Association　2018/10/14

  39. 社会科学研究におけるGIS活用事例 Invited

    原田 勝孝

    ESRIジャパンGISコミュニティフォーラム　2018/10/03

  40. Measuring Destruction from Above: Long-Term Effects of the WWII Air Raid Damages on Contemporary Sociopolitical Activities in Japan International-presentation

    Gaku Ito

    Annual conference of American Political Science Association　2018/08/31

  41. Measuring Destruction from Above: Long-Term Effects of the WWII Air Raid Damages on Contemporary Sociopolitical Activities in Japan Invited

    Masataka Harada

    CAES Seminar at Fukuoka University　2018/07/20

  42. Measuring Destruction from Above: Long-Term Effects of the WWII Air Raid Damages on Contemporary Sociopolitical Activities in Japan International-presentation Invited

    Masataka Harada

    Microeconomics Workshop at University of Tokyo　2018/07/03

  43. Measuring Destruction from Above: Long-Term Effects of the WWII Air Raid Damages on Contemporary Sociopolitical Activities in Japan International-presentation

    Masataka Harada

    The 1st Annual Meeting of the Japanese Society for Quantitative Political Science　2018/01/09

  44. 中央から地方への財政移転と犯罪率の関係

    「データ・アーカイヴの開発とデータ・エビデンスによる社会科学研究」 カンファレンス　2016/12/02

  45. Distributive Politics and Crime: An Instrumental Variable Approach International-presentation

    Masataka Harada

    Annual conference of American Political Science Association　2016/09/03

  46. 中央から地方への財政移転と犯罪率の関係

    日本選挙学会総会・研究会　2016/05/14

  47. The Unspoken Role of Public Works Projects in Public Safety: An IV Approach Invited

    Masataka Harada

    Seminar on Comparative Politics and Area Studies　2015/10/01

  48. The Unspoken Role of Public Works Projects in Public Safety: An IV Approach International-presentation

    Masataka Harada

    Annual conference of American Political Science Association　2015/09

  49. Non-parametric Sensitivity Analysis without Matched Pairs: Extension of Sensitivity Analysis with BART International-presentation

    Masataka Harada

    Annual conference of American Political Science Association　2014/08

  50. Comparison of Dual-Parameter Sensitivity Analysis International-presentation

    Masataka Harada

    Annual conference of American Political Science Association　2013/09

  51. Sensitivity to an Unobserved Confounder: a framework that allows for targeted estimands International-presentation

    Masataka Harada

    Joint Statistical Meetings,　2013/08

  52. Sensitivity Analysis for Unmeasured Confounding: Extension to Heterogeneous Treatments and Beyond Invited

    Masataka Harada

    IPP Seminar　2013/04/10

  53. Causal Estimation of the Deterrence Effect of the Electoral Deposit on Candidacy International-presentation

    Daniel M. Smith

    Annual conference of Midwest Political Science Association　2013/04

  54. Generalized Sensitivity Analysis and Its Applications International-presentation

    Masataka Harada

    Annual conference of Midwest Political Science Association　2013/04

  55. Generalized Sensitivity Analysis and Its Applications International-presentation

    Masataka Harada

    Annual conference of American Political Science Association　2012/08

  56. Causal Estimation of the Deterrence Effect of the Electoral Deposit on Candidacy International-presentation

    Masataka Harada

    Annual conference of Midwest Political Science Association　2012/04

  57. Generalized Sensitivity Analysis International-presentation

    Masataka Harada

    Annual conference of Midwest Political Science Association　2012/04

  58. The Third Factor of Political Participation International-presentation

    Masataka Harada

    Annual conference of American Political Science Association　2011/09

  59. Legacy of War on Democratic Performance: Causal estimation of the long-lasting effect of the air raids in Japan during WWII International-presentation

    Masataka Harada

    Annual conference of Midwest Political Science Association　2011/04

  60. Estimating Causal Effects of Mass Destruction on Democratic Performance - A natural experimental approach using the allied bombing in Japan during World War II International-presentation

    Masataka Harada

    Annual conference of Southern Political Science Association　2011/01

  61. Simple Generalized Sensitivity Analysis for Propensity Score Matching International-presentation

    Annual conference of Southern Political Science Association　2011/01

  62. Identifying the Causal Mechanisms of Neighborhood Effects on Political Participation: An application of the generalization of propensity score International-presentation

    Masataka Harada

    Annual conference of Midwest Political Science Association　2010/04

  63. Legacy of War on Democratic Performance: Causal estimation of the long-lasting effect of the air raids in Japan during WWII International-presentation Invited

    Masataka Harada

    External Seminar　2010/02

  64. Re-Evaluating the Neighbor-hood Effects on Political Partici-pation: An Application of Propensity Score Matching with Continuous Treatment International-presentation

    Masataka Harada

    Annual conference of Midwest Political Science Association　2009/04

  65. Reducing Turnout Overestimation in Online Surveys: Integrating Randomized Response Instrument and Indirect Questioning Method International-presentation Invited

    Masataka Harada, Tetsuya Matsubayashi, Ikuma Ogura

    2026 Asian Electoral Studies Conference　2026/08/21

Show all Show first 5

Research Projects 10

  1. Understanding, Improving, and Solving Problems in Contemporary Democratic Systems through JES8, a Large-Scale Survey of Japanese Voters

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Keio University

    2025/04/01 - 2029/03/31

  2. 回答拒否時代の新しいネット・パネル・エリート調査：無作為化回答操作変数による挑戦 Competitive

    原田 勝孝

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業（科研費）

    Category: 挑戦的研究（萌芽）

    Institution: 東北大学

    2026/06 - 2029/03

    More details Close

    本研究は、先進国で深刻化する世論調査の不回答バイアスが引き起こす信頼性低下という切迫した課題に挑む。特定の属性や利害に偏る不回答が推定の歪みを生み、多くの調査で回答率が1桁〜10%台に留まる現状に対し、本研究は、確率標本を前提に開発された無作為化回答操作変数（RRI）を発展させ、インターネット・パネル・エリート調査へ適用を拡げる。これにより、回答拒否が常態化する時代において推定の信頼性を確保し、信頼できる情報として社会調査の復権を目的とする。具体的には、謝礼額や督促数など答えやすさだけを変えた２つの版を回答者に無作為に割り当て、両群の回答率差から不回答による歪みを調整するRRIを改良し、回答傾向の偏りを調整する非確率標本のインターネット調査、離脱に伴う継続率低下を補正するパネル調査、研究者への不信が影響する行政・エリート調査の３領域に適用する。本研究の挑戦的研究としての意義は、不回答バイアスに対し、RRIを改良・発展させ、インターネット・パネル・エリート調査向けの新たな補正手法を開発することで、世論調査の正統性低下を防ぐとともに、既存知見を覆す発見や学術的波及効果が期待できる点にある。

  3. Unraveling the Origins of Pork-Barrel Politics with International Political Economy

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2024/04 - 2028/03

  4. How Empathy and Cooperation Develop - An international survey using the first Internet-lab-in-the-field experiment

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Fukuoka University

    2023/06 - 2026/03

  5. To investigate the association between gut microbiota and atherosclerosis using AI

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Fukuoka University

    2022/06 - 2025/03

  6. JESVII調査実施による選挙研究から代議制民主主義研究への展開とデータ公開 Competitive

    小林良彰, 堤英敬, 原田勝孝, 谷口尚子, 飯田健, 築山宏樹

    Offer Organization: Japan Society for the Promotion of Science

    System: 日本学術振興会科学研究費補助金

    Category: 基盤研究（Ａ）

    Institution: Keio University

    2020/04 - 2025/03

  7. 向社会化仮説の検証とその一般化：日本本土空襲の機械学習による画像解析 Competitive

    原田勝孝, 伊藤岳

    Offer Organization: Japan Society for the Promotion of Science

    System: 日本学術振興会学術研究助成基金助成金

    Category: 基盤研究（Ｃ）

    Institution: Fukuoka University

    2020/04 - 2023/03

  8. An International Comparative Study of Governance in Representative Democracy Competitive

    Yoshiaki Kobayashi

    Offer Organization: 文部科学省

    System: 科学研究費

    Category: 国際共同研究強化(B)

    2018/10/09 - 2022/03/31

  9. 歴史事象の超長期的影響に関する研究－戊辰戦争と現代日本政治経済－ Competitive

    窪田悠一, 原田勝孝, 伊藤岳

    System: 日本学術振興会学術研究助成基金助成金

    Category: 挑戦的研究（萌芽）

    2019/06 - 2022/03

  10. 日本本土空襲前後の重層的データを用いた社会資本が政治参加に与える影響の因果分析 Competitive

    Harada Masataka, Ito Gaku

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: 若手研究（B）

    2015/04 - 2019/03

    More details Close

    What kind of legacies does the large-scale war violence leave to the contemporary societies? Despite its academic importance, not many studies have examined the causal impacts of the community-level war destructions. One of the reasons is that a war does not leave random damages. To overcome this challenge, we utilized the naturally occurring variations of war damages from the Bombing of Tokyo in 1945. Due to the indiscriminate nature of the Bombing of Tokyo and many natural factors such as geography and weather, it generated as-if random variations if we observed the damage at micro-level. We developed the neighborhood-level geographic data from the aerial photography after WWII using remote-sensing technique, which is the most disaggregated dataset ever produced. The results indicates that the heavily bombed areas show lower level of contemporary socioeconomic indicators such as higher crime rates, higher unemployment rates, lower average educational attainments.

Show all Show first 5