Sanni Breining, Joseph Doyle, Jr., David Figlio, Krzysztof Karbownik, and Jeffrey Roth
Research has shown birth order has a large influence on educational attainment, yet much less is known about the role of birth order on delinquency outcomes such as disciplinary problems in school, juvenile delinquency, and adult crime. The researchers use rich datasets from Denmark and the state of Florida to examine these outcomes and explore potential mechanisms, finding that in families with two or more children, second-born boys are 20 to 40 percent more likely to be disciplined in school and enter the criminal justice system versus first-born boys, even when comparing siblings.