Scott Alexander examines a study showing positive effects of early intervention on at-risk children, but questions its policy implications due to high costs. Longer summary

Scott Alexander discusses a study on early intervention programs for at-risk children, which showed positive effects on various outcomes at age 25. The study, a randomized controlled trial, found that intensive interventions costing $60,000 per child reduced the odds of developing psychiatric disorders, substance abuse problems, and engaging in criminal behavior. While the results are scientifically interesting, Scott points out some limitations and questions the cost-effectiveness from a policy perspective. He notes that the intervention didn't affect all outcomes equally and that the high cost might not justify the benefits when compared to existing educational spending. Shorter summary