“…Relatives of schizophrenic probands have been reported to show a higher prevalence of cluster A STPD than relatives of normal controls in several,11,21,30 but not all,67,68 recent family studies, as well as in the expanded adoption studies.12,14 Elevated rates of schizotypal personality features and disorder in HRSz compared with NC subjects in analyses combining both samples (A and B) at earlier testing rounds have been previously reported. 45,69 In the present study, examining only sample A and removing subjects in whom schizophrenia had developed, we found a significant difference in HRSz vs NC subjects for cluster A as a whole, but not for STPD alone.…”