Measurement invariance of the Spanish Launay-Slade Hallucinations Scale-Extended version between putatively healthy controls and people diagnosed with a mental disorder

Sara Siddi; Susana Ochoa; Aida Farreny; Gildas Brébion; Frank Larøi; Jorge Cuevas-Esteban; Josep Maria Haro; Christian Stephan-Otto; Antonio Preti

doi:10.1002/mpr.1741

Measurement invariance of the Spanish Launay-Slade Hallucinations Scale-Extended version between putatively healthy controls and people diagnosed with a mental disorder

Int J Methods Psychiatr Res. 2018 Dec;27(4):e1741. doi: 10.1002/mpr.1741. Epub 2018 Sep 20.

Authors

Sara Siddi^{1

2

3}, Susana Ochoa^{1

2}, Aida Farreny⁴, Gildas Brébion^{1

2}, Frank Larøi^{5

6

7}, Jorge Cuevas-Esteban^{1

2

8}, Josep Maria Haro^{1

2}, Christian Stephan-Otto^{1

2}, Antonio Preti^{3

9}

Affiliations

¹ Parc Sanitari Sant Joan de Déu, Fundació Sant Joan de Déu, Institut de Recerca Sant Joan de Déu, Sant Boi de Llobregat, Universitat de Barcelona, Barcelona, Spain.
² Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain.
³ Department of Education, Psychology, Philosophy, University of Cagliari, Cagliari, Italy.
⁴ East London NHS Foundation Trust, Unit for Social and Community Psychiatry, WHO Collaborating Centre for Mental Health Services Development, London, UK.
⁵ Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway.
⁶ NORMENT-Norwegian Center of Excellence for Mental Disorders, Research, University of Oslo, Oslo, Norway.
⁷ Psychology and Neuroscience of Cognition Research Unit, University of Liège, Liège, Belgium.
⁸ Servei de Psiquiatria, Hospital Universitari Germans Trias i Pujol, Badalona, Spain.
⁹ Center of Liaison Psychiatry and Psychosomatics, University Hospital, University of Cagliari, Cagliari, Italy.

Abstract

Objectives: The current study aimed at evaluating the reliability, convergent and divergent validity, and factor structure of the Spanish Launay-Slade Hallucinations Scale-Extended version (LSHS-E) in people with mental disorders and healthy controls.

Methods: Four hundred and twenty-two individuals completed the Spanish LSHS-E and the Spanish Community Assessment of Psychic Experiences. The convergent and divergent validity of the LSHS-E was assessed with the three dimensions of the Community Assessment of Psychic Experiences (positive, negative, and depressive dimensions) in healthy controls and people with a mental disorder. Factor structure of the LSHS-E was assessed using confirmatory factor analysis and measurement invariance.

Results: The LSHS-E had a good reliability in healthy controls and people with a mental disorder (Cronbach's = 0.83 and 0.91, respectively). The LSHS-E was more strongly associated with positive psychotic-like experiences than with depressive and negative symptoms. Four factors were found: (a) "intrusive thoughts"; (b) "vivid daydreams"; (c) "multisensory hallucination-like experiences"; and (d) "auditory-visual hallucination-like experiences" that were invariant between the group of healthy controls and people with a mental disorder.

Conclusion: The Spanish version of the LSHS-E possesses adequate psychometric properties, and the confirmatory factor analysis findings provide further support for the multidimensionality of proneness to hallucination in clinical and nonclinical samples.

Keywords: Launay-Slade Hallucination Scale; factor analysis; hallucinatory proneness; measurement invariance; sensitivity and specificity analyses.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adult
Female
Hallucinations / diagnosis*
Humans
Male
Mental Disorders / diagnosis*
Middle Aged
Psychiatric Status Rating Scales / standards*
Reproducibility of Results
Sensitivity and Specificity
Spain