The multidimensional schizotypy scale-brief: Scale development and psychometric properties

Georgina M. Gross*, Thomas R. Kwapil, Michael L. Raulin, Paul J. Silvia, Neus Barrantes-Vidal*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

© 2017 This article reports on the development and psychometric properties of a brief version of the Multidimensional Schizotypy Scale (MSS-B). The MSS-B contains 38 items that assess positive, negative, and disorganized schizotypy. The scale was derived from the full-length Multidimensional Schizotypy Scale, and the positive, negative, and disorganized subscales were designed to provide the same content coverage as the original subscales. Scale development involved a derivation sample (n = 6265) and a separate cross-validation sample (n = 1000), both drawn from four universities and Amazon Mechanical Turk. The MSS-B was derived using classical test theory, item response theory, and differential item functioning. The three subscales exhibited high internal-consistency reliability, good item- and model-fit, good test information functions, and expected patterns of intercorrelations and associations with neuroticism, sex, and race/ethnicity. This pattern of findings was almost identical between the derivation and cross-validation samples. Furthermore, the pattern of findings was closely comparable for MSS-B subscales and the full-length MSS subscales. The MSS-B appears to offer a promising brief measure for assessing schizotypy.
Original languageEnglish
Pages (from-to)7-13
JournalPsychiatry Research
Volume261
DOIs
Publication statusPublished - 1 Mar 2018

Keywords

  • Assessment
  • Psychosis
  • Scale development
  • Schizophrenia-spectrum
  • Schizotypal

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