Titre
The Measurement Invariance of Schizotypy in Europe
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Fonseca-Pedrero, E.
Auteure/Auteur
Ortuño-Sierra, J.
Auteure/Auteur
Sierro, G.
Auteure/Auteur
Daniel, C.
Auteure/Auteur
Cella, M.
Auteure/Auteur
Preti, A.
Auteure/Auteur
Mohr, C.
Auteure/Auteur
Mason, O.
Auteure/Auteur
Liens vers les personnes
ISSN
0924-9338
Statut éditorial
Publié
Date de publication
2015
Volume
30
Numéro
7
Première page
837
Dernière page/numéro d’article
844
Peer-reviewed
Oui
Langue
anglais
Résumé
The short version of the Oxford-Liverpool Inventory of Feelings and Experiences (sO-LIFE) is a widely used measure assessing schizotypy. There is limited information, however, on how sO-LIFE scores compare across different countries. The main goal of the present study is to test the measurement invariance of the sO-LIFE scores in a large sample of non-clinical adolescents and young adults from four European countries (UK, Switzerland, Italy, and Spain). The scores were obtained from validated versions of the sO-LIFE in their respective languages. The sample comprised 4190 participants (M = 20.87 years; SD = 3.71 years). The study of the internal structure, using confirmatory factor analysis, revealed that both three (i.e., positive schizotypy, cognitive disorganisation, and introvertive anhedonia) and four-factor (i.e., positive schizotypy, cognitive disorganisation, introvertive anhedonia, and impulsive nonconformity) models fitted the data moderately well. Multi-group confirmatory factor analysis showed that the three-factor model had partial strong measurement invariance across countries. Eight items were non-invariant across samples. Significant statistical differences in the mean scores of the s-OLIFE were found by country. Reliability scores, estimated with Ordinal alpha ranged from 0.75 to 0.87. Using the Item Response Theory framework, the sO-LIFE provides more accuracy information at the medium and high end of the latent trait. The current results show further evidence in support of the psychometric proprieties of the sO-LIFE, provide new information about the cross-cultural equivalence of schizotypy and support the use of this measure to screen for psychotic-like features and liability to psychosis in general population samples from different European countries.
PID Serval
serval:BIB_7D75AE43EB0C
Date de création
2015-07-12T14:28:48.032Z
Date de création dans IRIS
2025-05-20T21:03:16Z