Teens can’t get jobs because older workers are crowding them out and teen pregnancies started to rise in 2006. This seems a bit more direct correlation than the desire to blame TV shows, Juno, or abstinence-only sex education. What can teens do with lots of free time on their hands and no money?
The state-by-state variation may suggest other potential causes besides just economics. Also, “teens” does include 18- and 19-year-old adults. but the surveys don’t track marital status.
