The CFA results for the MTI psychopathy items at age 17 Time 1 revealed excellent fit for the two-factor model, TLI = .96, RMSEA = .05 (χ2(28) = 61.92). The age 23 Time 2 results for the MTI psychopathy items also revealed excellent fit for the two-factor model, TLI = .95, RMSEA = .05 (χ2(28) = 55.96). All item-to-factor loadings were significant (ps < .05–.001). The range of factor loadings were as follows: Age 17 (time 1): Detachment = .54 – .70, Antisocial = .60 – .78; Age 23 (time 2): Detachment = .54 – .67, Antisocial = .47 – .80. The latent correlations between the Detachment and Antisocial factors at age 17 Time 1 (r = .71, p < .0001) and age 23 Time 2 (r = .72, p < .0001) were large, suggesting strong links between emotional detachment and overt antisocial behavior. Note that a one-factor model was also tested for comparison purposes, but resulted in a poorer fit (TLI = .91–.92, RMSEA = .07–.09), compared to the two-factor model.
