The Figure shows the parameter estimates for the best-fitting model 8. Focusing on factor loadings of 0.30 or more, 6 features of this model are noteworthy. First, 1 of the genetic factors is marked by prominent selective loadings for 2 CD criteria, running away from home and playing hooky, with a somewhat lesser loading for telling lies. We interpreted this genetic factor as reflecting rule breaking.7,8,11 Second, the other genetic factor is marked by substantial loadings for 2 other CD criteria, starting fights and hurting people, with a lesser loading for using a weapon in a fight. The indicators of this factor and their relative loadings mirror findings of Tackett et al.9 We interpreted this factor as reflecting overt aggression. Third, the single shared environmental common factor shows appreciable loadings for 5 CD criteria, 3 of which (destroying property, setting fires, and hurting animals) do not load on either genetic factor and 2 others (telling lies and stealing) that load secondarily on the rule-breaking genetic factor. We interpreted this factor as reflecting covert delinquency. Fourth, the single nonshared environmental common
