Exploratory Graph Analysis of the Multidimensional Schizotypy Scale.

Autor: Christensen AP; Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC 27402-6170, USA. Electronic address: apchrist@uncg.edu., Gross GM; U.S. Department of Veterans Affairs, VA Connecticut Healthcare System, West Haven, CT 06516, USA; Yale University School of Medicine, New Haven, CT 06150, USA., Golino HF; Department of Psychology, University of Virginia, Charlottesville, VA 22904-440, USA., Silvia PJ; Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC 27402-6170, USA., Kwapil TR; Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC 27402-6170, USA; Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, IL 61820-6983, USA.
Jazyk: angličtina
Zdroj: Schizophrenia research [Schizophr Res] 2019 Apr; Vol. 206, pp. 43-51. Date of Electronic Publication: 2018 Dec 17.
DOI: 10.1016/j.schres.2018.12.018
Abstrakt: The present study examined the dimensional structure underlying the Multidimensional Schizotypy Scale (MSS) and its brief version (MSS-B). We used Exploratory Graph Analysis (EGA) to evaluate their dimensional structure in two large, independent samples (n = 6265 and n = 1000). We then used Confirmatory Factor Analysis (CFA) to compare the fit of the theoretical dimensions with the EGA dimensions. For the MSS, EGA identified four dimensions: positive schizotypy, two dimensions of negative schizotypy (affective and social anhedonia), and disorganized schizotypy. For the MSS-B, EGA identified three dimensions, which corresponded to the theorized positive, negative, and disorganized dimensions. Based on the MSS's EGA dimensions, we also estimated a four-factor model for the MSS-B. The CFA comparison found that the four-factor model fit significantly better than the theoretical three-factor model for both the MSS and MSS-B, providing support for the theoretical model and offering a more nuanced interpretation of the negative schizotypy factor. In addition, EGA also revealed that the positive and negative schizotypy dimensions of the MSS and MSS-B might be mediated by the disorganized dimension. Our findings offer new implications for future research on the MSS and MSS-B dimensions that may provide differential associations with interview and questionnaire measures.
(Copyright © 2018 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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