Exploratory Graph Analysis of the Multidimensional Schizotypy Scale

Alexander P. Christensen, Georgina M. Gross, Hudson F. Golino, Paul J. Silvia, Thomas R. Kwapil

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)43-51
Number of pages9
JournalSchizophrenia Research
StatePublished - Apr 2019


  • Exploratory Graph Analysis
  • Factor analysis
  • Network analysis
  • Schizophrenia-spectrum disorders
  • Schizotypy

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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