Table 7 presents the instrument-specific results for the schizotypal personality disorder. The hypotheses for high self-consciousness and anxiousness, and for low warmth, gregariousness, positive emotions, and trust were confirmed for all the instruments used, with perhaps a few scattered exceptions (e.g., the findings were generally less strong for the SCID). The largest variation across instruments for the hypotheses of schizotypal PD concerned the facets of openness. Central to the FFM conceptualization of schizotypal PD are elevations on the openness facets of fantasy, actions, and ideas. These elevations are particularly useful in distinguishing schizotypal from the schizoid PD, as they represent the cognitive and perceptual aberrations that characterize schizotypal PD (Widiger, Trull, et al., 2002). It is evident from Table 7 that the hypotheses for fantasy and ideas were confirmed when the SIFFM was used to assess the FFM, but not when the NEO PI-R or the FFMRF were employed.
