Multidimensional factor structure of unusual experiences: new measures of positive schizotypy

Maha Charabi, Eugenia Kravariti, Michael Eysenck, Elias Tsakanikos

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Positive schizotypy has been employed as a unitary construct in previous experimental research despite the phenomenological heterogeneity of the schizotypal experiences that describes. In the present paper, we report two psychometric studies on the Unusual Experiences (UE) scale, a widely employed measure of positive schizotypy from the Oxford –Liverpool Inventory for Feeling and Experiences (O-LIFE; Mason, Claridge, & Jackson, 1995). Study 1 (N=829) explored the factor structure of UE and model fit was assessed Confirmatory Factor Analysis (CFA). Study 2 (N=108) evaluated the validity of the factors by employing well-established measures of schizotypy related to positive symptomatology. The results support a theoretically meaningful 3-factor solution: UE1 Unusual perceptions, UE2 Unusual salience/reality monitoring and UE3 Unusual beliefs. The new subscales had adequate psychometric properties. We propose that the new subscales have the potential to improve research cohesion, motivate further research and enhance understanding of experimental correlates of positive schizotypy.

© 2019, Elsevier. The attached document (embargoed until 14/05/2021) is an author produced version of a paper published in PERSONALITY AND INDIVIDUAL DIFFERENCES uploaded in accordance with the publisher’s self- archiving policy. The final published version (version of record) is available online at the link. Some minor differences between this version and the final published version may remain. We suggest you refer to the final published version should you wish to cite from it.

Original languageEnglish
Pages (from-to)272-279
Publication statusPublished - 14 May 2019


  • delusions; hallucinations; psychosis-like symptoms; positive symptoms of schizophrenia; positive schizotypy; scale development

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