title: Evidence of structural invariance across three groups of Meehlian schizotypes.
abstract: According to Meehl's model of schizotypy, there is a latent personality organization associated with the diathesis for schizophrenia that can be identified in several ways. We sought to examine the structural invariance of four Chapman psychosis-proneness scales (CPPS) across three groups of putative schizotypes, namely, clinically-, biologically-, and psychometrically-identified schizotypes. We examined the factor structure of the Perceptual Aberration (PER), Magical Ideation (MIS), Revised Social Anhedonia (RSAS), and Revised Physical Anhedonia (RPAS) scales in 196 schizophrenia patients, 197 non-psychotic first-degree relatives, and 1,724 non-clinical young adults. The confirmatory factor analyses indicated that the best-fitting model was one in which there is a two-factor model with negative schizotypy (RSAS and RPAS) and positive schizotypy (PER and MIS). All three samples fit the model well, with Comparative Fit Indices>0.95 and Tucker Lewis Indices>0.90. The root mean square error of approximations were all small (P values⩽0.01). We also observed that for both anhedonia scales, the groups' mean scale scores varied in the hypothesized direction, as predicted by Meehl's model of schizotypy. All three Chinese samples, namely, the patients (clinical schizotypes), relatives (biologically-identified schizotypes), and non-clinical young adults (containing psychometrically-identified schizotypes) showed the same factorial structure. This finding supports the suitability of the CPPS for cross-cultural and/or genetic investigations of schizotypy.
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences , Beijing, China.
authors.forename: Raymond Ck
authors.initials: RC
authors.lastname: Chan
authors.affiliation: Department of Psychology, University of Wisconsin-Madison, Madison, WI, USA; Department of Psychiatry, University of Wisconsin-Madison, Madison, WI, USA.
authors.forename: Diane C
authors.initials: DC
authors.lastname: Gooding
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Hai-Song
authors.initials: HS
authors.lastname: Shi
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Fu-Lei
authors.initials: FL
authors.lastname: Geng
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Dong-Jie
authors.initials: DJ
authors.lastname: Xie
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Zhuo-Ya
authors.initials: ZY
authors.lastname: Yang
authors.affiliation: Faculty of Health Management, Guangzhou Medical University , Guangzhou, China.
authors.forename: Wen-Hua
authors.initials: WH
authors.lastname: Liu
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences , Beijing, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory of Brain Functional Genomics (MOE & STCSM), School of Psychology and Cognitive Science, East China Normal University , Shanghai, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Yan
authors.affiliation: Peking University Sixth Hospital, Beijing, China; Peking University Institute of Mental Health, Beijing, China.
authors.forename: Chuan
authors.initials: C
authors.lastname: Shi
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China; Department of General Adult Psychiatry, Castle Peak Hospital, Hong Kong Special Administrative Region, Hong Kong, China.
authors.forename: Simon Sy
authors.initials: SS
authors.lastname: Lui
authors.affiliation: Department of General Adult Psychiatry, Castle Peak Hospital, Hong Kong Special Administrative Region , Hong Kong, China.
authors.forename: Eric Fc
authors.initials: EF
authors.lastname: Cheung