Article (Scientific journals)
Preliminary structure and predictive value of attenuated negative symptoms in 22q11.2 deletion syndrome
Schneider, Maude; Van der Linden, Martial; Glaser, Bronwyn Glaser et al.
2012In Psychiatry Research, 196 (2-3), p. 277-284
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Keywords :
Adaptive functioning; COMT; Factor analysis; Motivation; Schizophrenia; Velo-cardio-facial syndrome; Positive and Negative Syndrome Scale; Structural Interview for Prodromal Symptoms; Adaptation, Psychological; Adolescent; Catechol O-Methyltransferase; Child; Cognition Disorders; DiGeorge Syndrome; Factor Analysis, Statistical; Female; Humans; Intelligence; Male; Neuropsychological Tests; Polymorphism, Genetic; Predictive Value of Tests; Psychiatric Status Rating Scales; Severity of Illness Index; Young Adult
Abstract :
[en] Current research in schizophrenia suggests that negative symptoms cannot be considered a unitary construct and should be divided in two dimensions: lack of motivation and impoverishment of expression. In addition, negative symptoms are particularly related to decreased daily-life functioning. In the present study, we aimed to replicate these results in a sample of participants with 22q11.2 deletion syndrome (22q11DS), a neurogenetic condition associated with high risk of developing schizophrenia. We also expected to observe an association between the COMT Val/Met polymorphism and negative symptoms. We examined the factorial structure of negative symptoms in a sample of 47 individuals with 22q11DS using the Structured Interview for Prodromal Symptoms (SIPS) and the Positive and Negative Syndrome Scale (PANSS). We also performed stepwise regression analyses to investigate the associations between negative symptoms, adaptive skills and the COMT Val/Met polymorphism. Negative symptoms were explained by a two-factor solution, namely the "amotivation and social withdrawal" and the "emotional withdrawal and expression" dimensions. The motivational dimension was significantly associated with daily-life functioning. Met carriers were rated as experiencing significantly more symptoms of amotivation. The results are interpreted in the light of existing cognitive models in the field of motivation and schizophrenia. © 2012 Elsevier Ltd.
Disciplines :
Neurosciences & behavior
Author, co-author :
Schneider, Maude;  Université de Genève - UNIGE > Office Médico-Pédagogique Research Unit
Van der Linden, Martial ;  Université de Liège - ULiège > Département de Psychologie > Département de Psychologie
Glaser, Bronwyn Glaser;  Université de Genève - UNIGE > Office Médico-Pédagogique Research Unit
Rizzi, Eleonora;  Université de Genève - UNIGE > Office Médico-Pédagogique Research Unit
Dahoun, Sophie P.;  Université de Genève - UNIGE > Department of Genetic Medicine and Development
Hinard, Christine;  Université de Genève - UNIGE > Department of Genetic Medicine and Development
Bartoloni, Lucia;  Université de Genève - UNIGE > Department of Genetic Medicine and Development
Antonarakis, Stylianos E.;  Université de Genève - UNIGE > Department of Genetic Medicine and Development
Debbané, Martin;  Université de Genève - UNIGE > Faculty of Psychology
Eliez, Stephan;  Université de Genève - UNIGE > Office Médico-Pédagogique Research Unit
Language :
English
Title :
Preliminary structure and predictive value of attenuated negative symptoms in 22q11.2 deletion syndrome
Publication date :
2012
Journal title :
Psychiatry Research
ISSN :
0165-1781
eISSN :
1872-7123
Publisher :
North-Holland Biomedical Press, Netherlands
Elsevier, Netherlands
Volume :
196
Issue :
2-3
Pages :
277-284
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 January 2020

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