The Measurement Invariance of Schizotypy in Europe

Details

Serval ID
serval:BIB_7D75AE43EB0C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The Measurement Invariance of Schizotypy in Europe
Journal
European Psychiatry
Author(s)
Fonseca-Pedrero E., Ortuño-Sierra J., Sierro G., Daniel C., Cella M., Preti A., Mohr C., Mason O.
ISSN
0924-9338
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
30
Number
7
Pages
837-844
Language
english
Abstract
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.
Keywords
schizotypy, schizotypal, invariance, equivalence, cross-cultural, sO-LIFE
Create date
12/07/2015 15:28
Last modification date
20/08/2019 14:38
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