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Did Legalized Abortion Lower Crime?

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  • Ted Joyce

Abstract

This paper examines the relationship between the legalization of abortion and subsequent decreases in crime. In a current study, researchers estimate that the legalization of abortion explains over half of the recent decline in national crime rates. The association is identified by correlating changes in crime with changes in the abortion ratio weighted by the proportion of the criminal population exposed to legalized abortion. In this paper, I use an alternative identification strategy. I analyze changes in homicide and arrest rates among teens and young adults born before and after 1970 in states that legalized abortion prior to Roe v. Wade. I compare these changes with variation in homicide and arrest rates among cohorts from the same period but who were unexposed to legalized abortion. I find little evidence to support the claim that legalized abortion caused the reduction in crime. I conclude that the association between abortion and crime is not causal, but most likely the result of confounding from unmeasured period effects such as changes in crack cocaine use and its spillover effects.

Suggested Citation

  • Ted Joyce, 2001. "Did Legalized Abortion Lower Crime?," NBER Working Papers 8319, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:8319
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    Cited by:

    1. Listokin, Yair, 2003. "Does More Crime Mean More Prisoners? An Instrumental Variables Approach," Journal of Law and Economics, University of Chicago Press, vol. 46(1), pages 181-206, April.
    2. Christopher L. Foote & Christopher F. Goetz, 2005. "Testing economic hypotheses with state-level data: a comment on Donohue and Levitt (2001)," Working Papers 05-15, Federal Reserve Bank of Boston.
    3. Theodore J. Joyce & Ruoding Tan & Yuxiu Zhang, 2012. "Back to the Future? Abortion Before & After Roe," NBER Working Papers 18338, National Bureau of Economic Research, Inc.
    4. Julio Cáceres-Delpiano & Eugenio Giolito, 2012. "The Impact of Unilateral Divorce on Crime," Journal of Labor Economics, University of Chicago Press, vol. 30(1), pages 215-248.
    5. John R. Lott, Jr. & John Whitley, 2001. "Abortion and Crime: Unwanted Children and Out-of-Wedlock Births," School of Economics and Public Policy Working Papers 2001-05, University of Adelaide, School of Economics and Public Policy.
    6. Gabriel Chequer Hartung & Samuel Pessoa, 2007. "Fatores Demográficos Como Determinantes Da Criminalidade," Anais do XXXV Encontro Nacional de Economia [Proceedings of the 35th Brazilian Economics Meeting] 112, ANPEC - Associação Nacional dos Centros de Pós-Graduação em Economia [Brazilian Association of Graduate Programs in Economics].
    7. Jessica Wolpaw Reyes, 2007. "Environmental Policy as Social Policy? The Impact of Childhood Lead Exposure on Crime," NBER Working Papers 13097, National Bureau of Economic Research, Inc.
    8. Charles, Kerwin Kofi & Stephens, Melvin, Jr, 2006. "Abortion Legalization and Adolescent Substance Use," Journal of Law and Economics, University of Chicago Press, vol. 49(2), pages 481-505, October.
    9. Ted Joyce, 2004. "Did Legalized Abortion Lower Crime?," Journal of Human Resources, University of Wisconsin Press, vol. 39(1).
    10. Nunley, John M. & Seals, Richard Alan & Zietz, Joachim, 2011. "Demographic change, macroeconomic conditions, and the murder rate: The case of the United States, 1934–2006," Journal of Behavioral and Experimental Economics (formerly The Journal of Socio-Economics), Elsevier, vol. 40(6), pages 942-948.
    11. James M. Poterba, 2005. "Steven D. Levitt: 2003 John Bates Clark Medalist," Journal of Economic Perspectives, American Economic Association, vol. 19(3), pages 181-198, Summer.
    12. Ted Joyce, 2004. "Further Tests of Abortion and Crime," NBER Working Papers 10564, National Bureau of Economic Research, Inc.
    13. Whitaker, Stephan, 2011. "The impact of legalized abortion on high school graduation through selection and composition," Economics of Education Review, Elsevier, vol. 30(2), pages 228-246, April.
    14. Theodore J. Joyce, 2009. "Abortion and Crime: A Review," NBER Working Papers 15098, National Bureau of Economic Research, Inc.
    15. Travaglini, Guido, 2010. "Supervised Principal Components and Factor Instrumental Variables. An Application to Violent CrimeTrends in the US, 1982-2005," MPRA Paper 22077, University Library of Munich, Germany.
    16. Theodore J. Joyce, 2006. "Further Tests of Abortion and Crime: A Response to Donohue and Levitt (2001,2004, 2006)," NBER Working Papers 12607, National Bureau of Economic Research, Inc.
    17. John Lott & John Whitley, "undated". "Abortion and Crime: Unwanted Children and Out-of-Wedlock Births," Yale Law School John M. Olin Center for Studies in Law, Economics, and Public Policy Working Paper Series yale_lepp-1018, Yale Law School John M. Olin Center for Studies in Law, Economics, and Public Policy.
    18. Roland G. Fryer & Paul S. Heaton & Steven D. Levitt & Kevin M. Murphy, 2005. "Measuring the Impact of Crack Cocaine," NBER Working Papers 11318, National Bureau of Economic Research, Inc.
    19. Durlauf, Steven N. & Navarro, Salvador & Rivers, David A., 2010. "Understanding aggregate crime regressions," Journal of Econometrics, Elsevier, vol. 158(2), pages 306-317, October.
    20. Philip J. Cook & John H. Laub, 2001. "After the Epidemic: Recent Trends in Youth Violence in the United States," NBER Working Papers 8571, National Bureau of Economic Research, Inc.

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    • K4 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior

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