Fathers and Youth's Delinquent Behavior

This is from the new paper "Fathers and Youth's Delinquent Behavior" by Cobb-Clark and Tekin   

We find that adolescent boys engage in more delinquent behavior if there is no father figure in their lives. Adolescent girls' behavior is largely independent of the presence (or absence) of their fathers. However, the strong effect of family structure is not explained by the lack of paternal involvement that generally comes with fathers’ absence, even though adolescents who spend time doing things with their fathers often have better outcomes. There is also a link between adult delinquent behavior and adolescent family structure that cannot be explained by fathers' involvement with their adolescent sons and is only partially explained by fathers' involvement with their adolescent daughters. Finally, the strong link between adolescent family structure and delinquent behavior is not accounted for by the income differentials associated with fathers' absence.

May be obvious but not for that less important.