・Crack Epidemic
・Medical Marijuana Laws
・Hanshin-Awaji Earthquake


Hoshino, Tetsuya and Takuma Kamada. 2020. "Enforcement against Organized Crime Fosters Illegal Markets: Evidence from the Yakuza." *Equal authorship.

Ruback, R. Barry, Takuma Kamada, Lauren K. Knoth, and Leigh Tinik. “Effects of DUI Courts on DUI Deaths and Criminal Justice Outcomes: Rural-Urban Variation in Pennsylvania.” Reject & Resubmit at Criminology & Public Policy.

Kamada, Takuma. "The Crack Epidemic and the Rise and Persistence of Concentrated Poverty in the Inner City." Draft Coming Soon.

Kamada, Takuma. "The Emergence of the Crack Epidemic and Suburban Residence by Race, Ethnicity, and Class" Draft Coming Soon.

Gene Carte Student Paper Competition 2nd Place at American Society of Criminology, under the titled "The Emergence of Crack Cocaine, the Nature of Violence, and the Enduring Effects on Suburbanization."

Kamada, Takuma and Corina Graif. "The Long-Term Consequences of the Crack Epidemic on Residential Segregation" Draft Coming Soon.


Hoshino, Tetsuya and Takuma Kamada. 2020. "Third-Party Policing Approaches against Organized Crime: an Evaluation of the Yakuza Exclusion Ordinances" The Journal of Quantitative Criminology. (Pre-print Version)*Equal authorship.

Nguyen, Holly, Takuma Kamada, and Anke Ramakers. 2020. "On the Margins: Considering the Relationship between Informal Work and Reoffending." Justice Quarterly.

前田豊・鎌田拓馬. 2019.「Synthetic Control Methodを用いた個別事例の因果効果の識別論と方法」『理論と方法』(Causal Inference with a Single-treated Case using the Synthetic Control Method) (Joint with Yutaka Maeda).

Gavrilova, Evelina, Takuma Kamada, and Floris Zoutman. 2019. "Is Legal Pot Crippling Mexican Drug Trafficking Organizations? The Effect of Medical Marijuana Laws on U.S Crime." The Economic Journal.

2019 Austin Robinson Memorial Prize at the Royal Economic Society.


Enforcement and Community Isolation (Joint with Corina Graif)

Gentrification and Crime (Joint with Evelina Gavrilova and Floris Zoutman)

Immigration and Crime in Japan (Joint with Kikuko Nagayoshi and Toru Terashima)

Household Investment After the Tokyo Subway Sarin Attack in 1995: A Quantitative Case Study using the Synthetic Control Method


鎌田拓馬. 2016. 「文献紹介:"The Political Legacy of American Slavery"」『理論と方法』

Kamada, Takuma and Hajime Katayama. 2014. "Team Performance and Within-Team Salary Disparity: An Analysis of Nippon Professional Baseball." Economics Bulletin.