the current meta-analysis suggest that the findings of this research will not be unambiguous until matters of instrumentation, and even perhaps conceptualization, of the FFM are resolved. For example, the current meta-analysis suggests that comparable success in using the FFM as a proxy measure of a personality disorder is unlikely to be obtained for OCPD (unless the latter is assessed with the MCMI-III [Millon et al., 1996] or the SNAP [Clark, 1993]), schizotypal (unless the FFM is assessed with the SIFFM; Trull & Widiger, 1997), or dependent (unless the experimentally altered version of the NEO PI-R is used; Haigler & Widiger, 2001).
