Finally, using exploratory phenotypic factor analysis, we fitted 1- and 3-factor solutions to the CD criteria. The 3-factor model fit better on all indices (CFI = 0.98, TLI = 0.94, RMSEA = 0.04 vs CFI = 0.89, TLI = 0.86, RMSEA = 0.07). As seen in Table 4, the 3 phenotypic factors closely resembled, respectively, the first rule-breaking genetic common factor, the covert delinquency shared environmental common factor, and the second overt aggression genetic common factor.
