Recent work indicates clinically meaningful differences in domains of psychopathic personality -- such as grandiose-manipulative (GM), callous-unemotional (CU), and daring-impulsive (DI) traits -- and parenting factors. Yet, different domains of parenting and reports from multiple informants may vary in their associations to psychopathic traits.…

Statistical analysis of categorical data often relies on multiway contingency tables; yet, as the number of categories and/or variables increases, the number of table cells with few (or zero) observations also increases. Unfortunately, sparse contingency tables invalidate the use of standard goodness-of-fit statistics. Limited-information fit…

Early preventive interventions can improve outcomes in childhood, but the most effective interventions can continue to deliver benefits through the life course. The Fast Track intervention, a randomized controlled trial for children at risk of conduct problems, has lowered psychopathology, substance use problems, and criminality and elevated…