Table 6 provides the instrument-specific results for the obsessive-compulsive personality disorder (OCPD). Central to the FFM conceptualization of this personality disorder are the facets of conscientiousness (Widiger, Trull, et al., 2002). In this instance, the meta-analysis would suggest variability in the findings due in part to the FFM assessment, as the hypotheses were confirmed when the NEO PI-R and FFMRF were used, but not when the SIFFM was used. However, we would suggest that this variability was, in fact, largely due to the differences in the assessment of OCPD across measures, rather than the FFM. The MCMI-III obtained strong relationships with all six facets of conscientiousness (i.e., all were above .38), while the SNAP also obtained effect sizes ranging from .17 to .30 with these facets. Meanwhile, the largest relationship with these same facets across the PDQ and SCID-II assessments of OCPD was only .09. Thus, it appears that the primary hypotheses for OCPD were supported for both the MCMI-III and the SNAP, but refuted by the PDQ and SCID-II.
