RT Journal Article SR Electronic T1 Did Legalized Abortion Lower Crime? JF Journal of Human Resources JO J Hum Resour FD University of Wisconsin Press SP 1 OP 28 DO 10.3368/jhr.XXXIX.1.1 VO XXXIX IS 1 A1 Joyce, Ted YR 2004 UL http://jhr.uwpress.org/content/XXXIX/1/1.abstract AB In this paper I compare changes in homicide and arrest rates among cohorts born before and after the legalization of abortion to changes in crime in the same years among similar cohorts who were unexposed to legalized abortion. I find little consistent evidence that the legalization of abortion in selected states around 1970, and then in the remaining states following Roe v. Wade, had an effect on recent crime rates. I conclude that the dramatic association as reported in a recent study is most likely the result of unmeasured period effects such as changes in crack cocaine use.