We noted earlier though that some of the failure of the contribution of openness to experience could reflect instrumentation. The hypotheses for the relationship of schizotypal PD to openness to fantasy and ideas were confirmed when the SIFFM was used. Haigler and Widiger (2001) reported correlations of only -.11, -.15, and -.06 with NEO PI-R openness for the SNAP, MMPI-2, and PDQ-4 schizotypal PD scales (respectively), consistent with the current findings. However, upon converting each openness item to a maladaptive variant (e.g., “I have a very active imagination” was revised to “I have an excessive imagination” and “I enjoy playing with theories or abstract ideas” became “I become preoccupied with theories or abstract ideas”) the correlations increased to .28, .24, and .33 (respectively).
