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Non-Fatal Strangulation Laws and Intimate Partner Homicides

Author

Listed:
  • de Assis, Dércio

    (University of Nottingham)

  • Ghosh, Arpita

    (University of Exeter)

  • Oreffice, Sonia

    (University of Exeter)

  • Quintana-Domeque, Climent

    (University of Exeter)

Abstract

Do non-fatal strangulation laws save lives? Non-fatal strangulation (NFS) is a common and dangerous form of intimate partner violence (IPV) and a predictor of homicide, yet it was historically neglected by the criminal justice system. Since the year 2000, most U.S. states have enacted laws enlisting NFS as a standalone criminal offense. We compile a novel dataset on state NFS statutes and link it to the FBI Supplementary Homicide Reports from 1990 to 2019 to estimate the causal effects of these laws on IPH rates. Using a difference-in-differences strategy, and an estimator that accounts for staggered adoption and treatment heterogeneity, we find that NFS laws led to significant reductions in IPH rates. We estimate that these laws reduce female-victim IPH by 14% and male-victim IPH by 36%, among victims aged 18-34. No significant effects are observed for victims 50 and above or for homicides committed by strangers. Event-study estimates support the parallel trends assumption. Our findings suggest that NFS laws can disrupt the escalation of IPV and reduce lethal outcomes.

Suggested Citation

  • de Assis, Dércio & Ghosh, Arpita & Oreffice, Sonia & Quintana-Domeque, Climent, 2025. "Non-Fatal Strangulation Laws and Intimate Partner Homicides," IZA Discussion Papers 18006, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp18006
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    More about this item

    Keywords

    intimate partner violence; gender; difference-in-differences; criminal justice policy;
    All these keywords.

    JEL classification:

    • C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health
    • J12 - Labor and Demographic Economics - - Demographic Economics - - - Marriage; Marital Dissolution; Family Structure
    • J16 - Labor and Demographic Economics - - Demographic Economics - - - Economics of Gender; Non-labor Discrimination
    • J78 - Labor and Demographic Economics - - Labor Discrimination - - - Public Policy (including comparable worth)
    • K14 - Law and Economics - - Basic Areas of Law - - - Criminal Law
    • K42 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Illegal Behavior and the Enforcement of Law
    • N92 - Economic History - - Regional and Urban History - - - U.S.; Canada: 1913-

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