Abortion Legalization and Adolescent Substance Use
研究发现，在1973年全国合法化前已允许堕胎的州出生的青少年，其药物使用率显著低于同期其他州出生的人，且这种差异仅存在于特定出生队列。
We assess whether adolescents who faced a higher risk of having been aborted are more likely to use controlled substances. We find that adolescents born in states that legalized abortion before national legalization in 1973, during the years when only those states permitted abortion, were much less likely to use drugs than persons from the same birth cohorts born elsewhere. These differences do not exist for earlier or later cohorts. Our results are much the same when we characterize abortion risk by either the birth rate or abortion rate in the year and place of the person’s birth.