Kamada, Takuma. “From Pill to Poverty: Consequences of an Abuse-deterrent Opioid Policy on Concentrated Poverty.”

Kamada, Takuma. “Blessing or Curse for Organized Crime? The Long-term Effects of an Energy Transition from Coal to Oil on the Yakuza."

Gavrilova, Evelina, Takuma Kamada, Jessica Di Salvatore, and Floris Zoutman. “Gentrification and Crime: Evidence from New York City.”


Kamada, Takuma. 2022. “Black Flight? The Emergence of Crack Cocaine and Black Suburbanization.” Under Review.

American Society of Criminology 2019 Gene Carte Student Paper Competition, 2nd place, under the title: “The Emergence of Crack Cocaine, the Nature of Violence, and Enduring Effects on Suburbanization”

Hoshino, Tetsuya and Takuma Kamada. 2022. “Enforcement against Organized Crime Increases Organized Fraud: Evidence from the Yakuza.” Under Review.


Kamada, Takuma. 2022. “The Family Consequences of Terrorism: The Effects of the Tokyo Subway Sarin Attack on Marital Formation and Dissolution.” Socius. (Pre-print Version)

Correction 1: "One percent closer to the Chiyo or Chuo ward, marriage on average decreases by 3.7 percent, and divorce on average decreases by 6 percent" (p.8). 3.7 and 6 should be 0.037 and 0.06, respectively.

Correction 2: In Table 1, Figure 5, Figure F1, billion should be million.

Matsubayashi, Tetsuya, and Takuma Kamada. 2021. “The Great East Japan Earthquake and Suicide: The Long-term Consequences and Underlying Mechanisms.” Preventive Medicine.

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)

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」『理論と方法』(Maeda, Yutaka and Takuma Kamada. 2019. “Causal Inference with a Single-treated Case using the Synthetic Control Method.” Sociological Theory and Methods.)

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.

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