The @entity20546 Questionnaire-Brief Version (SPQ-B), which includes cognitive-perceptual, interpersonal, and disorganized domains, was developed as a concise, self-report measure of schizotypy. This analysis was conducted to: (1) determine the internal consistency reliability of SPQ-B total and subscale scores, (2) use confirmatory factor analysis to assess the three-factor model as well as a single-factor solution, and (3) examine a measure of concurrent criterion validity of SPQ-B scores. The study was conducted at a large, urban, university-affiliated, public-sector health system in the southeastern United States. Data were obtained from 118 @entity1 , including 61 biological relatives of @entity1 with @entity161 , @entity914 , or @entity914 , and 57 non-psychiatric controls. Relatives and controls did not differ significantly on SPQ-B total or subscale scores (or on the full 74-item SPQ total or subscale scores). Internal consistency reliability was adequate for the total SPQ-B score and the interpersonal subscale but was less than ideal for the cognitive-perceptual and disorganized subscales. Regarding the confirmatory factor analysis, though the three-factor solution yielded reasonably good fit to the data, the single-factor solution provided equal fit. Correlations between the three subscales ranged from .63 to .74. With regard to criterion validity, correlations between the SPQ-B total and subscale scores and schizotypy scores derived from a semi-structured, interview-based assessment revealed correlations generally ranging from .40 to .60. The SPQ-B may be a useful brief screening measure of schizotypy, though some limitations in its psychometric properties were evident in this sample. It may be advisable to use total SPQ-B scores rather than subscale scores in some situations, or to use factor analytic techniques to study the instrument's latent structure in specific samples.

Psychometric properties of the Brief Version of the XXXX Questionnaire in relatives of @entity1 with @entity161 -spectrum disorders and non-psychiatric controls.

@entity1 :: ('9606', 'Species') :: ['participants', 'patients'] @entity20546 :: ('MESH:D012569', 'Disease') :: ['Schizotypal Personality'] @entity161 :: ('MESH:D012559', 'Disease') :: ['schizophrenia'] @entity914 :: ('MESH:D011618', 'Disease') :: ['schizoaffective disorder', 'schizophreniform disorder']
@entity20546 :: (MESH:D012569,Disease) :: ['Schizotypal Personality']
