Universal early childhood education and adolescent risky behavior
研究日本普及学前教育对青少年危险行为的影响，发现学前教育扩张显著减少了青少年暴力逮捕率和少女怀孕率，但对高中和大学入学率无显著影响。
The evidence for the effects of early childhood education on risky behavior in adolescence is limited. This paper studies the consequences of an expansion of a universal preschool program in Japan . Exploiting regional differences in the program expansion, we estimate the policy effects using an event study model. Our estimates indicate that the preschool expansion significantly reduced juvenile violent arrests and the rate of teenage pregnancy, but did not increase high school enrollment or college enrollment rates. We suspect that improved non-cognitive skills can account for the reduction of risky behavior in adolescence.