This paper evaluates the evidence regarding teens' sexual activity and birth control use with an emphasis on the contribution of economic analysis. For non-economists, teen sexual activity is often considered spontaneous and irrational, and pregnancies are viewed as mistakes.' Alternatively an...

The introduction of legalized abortion in the early 1970s led to dramatic changes in fertility behavior. Some research has suggested as well that there were important impacts on cohort outcomes, but this literature has been limited and controversial. In this paper, we provide a framework for...