balance, the current findings indicate that the Detachment and Antisocial factors of the MTI are unidimensional (i.e., homogenous). This is consistent with other self-report measures of psychopathy (Neumann & Declerq, 2009; Paulhus, Neumann, & Hare, in press), as well as the Psychopathy Checklist scales (Hare & Neumann, 2008) in demonstrating unidimensionality of the constituent factors of these instruments. As previously noted, consideration of this issue has implications for studying the developmental patterns that characterize psychopathic traits given that clear articulation of item-to-factor relations may yield more precise estimates of stability and change over time.
