We investigate the effect of abortion access on teen birthrates using
county level panel data. Past research suggested that prohibiting abor
tion led to higher teen birthrates. Perhaps surprisingly, we find that
more recent restrictions in abortion access, including the closing of
abortion clinics and restrictions on Medicaid funding, had the opposi
te effect. Small declines in access were related to small declines amo
ng in-wedlock births; out-of-wedlock births were relatively unaffected
. Both results are consistent with a simple model in which pregnancy i
s endogenous and women gain new information about the attractiveness o
f parenthood only after becoming pregnant.