Executive deficits in psychotic and bipolar disorders – Implications for our understanding of schizoaffective disorder - 28/05/11
, Alexandre Meary a, b, c, Anca Trandafir a, b, Frank Bellivier a, b, c, Isabelle Roy c, Franck Schurhoff a, b, c, Marion Leboyer a, b, c
Corresponding author. Service de Psychiatrie, Hôpital Albert Chenevier, 40 rue de Mesly, F-94000 Créteil, France. Tel.: +33 (0) 1 49 81 30 51; fax: +33 (0) 1 49 81 30 59.Bienvenue sur EM-consulte, la référence des professionnels de santé.
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Abstract |
Objective |
Schizoaffective disorder could be considered as a form of schizophrenia, a form of bipolar disorder, an independent disorder or a disorder intermediate between bipolar disorder and schizophrenia, within a psychotic continuum. The study of cognitive deficits in subjects with those diagnoses could help differentiate between these possibilities.
Methods |
We compared cognitive performances of schizoaffective (SZAff) subjects with those of subjects with schizophrenia (SZ), bipolar disorder with psychotic symptoms (life-time) (BDP), bipolar disorder without life-time occurrence of psychotic symptoms (BD) and normal controls (NC). We used two tests of executive functions – the Wisconsin Card Sorting Test (WCST) and the Trail-making Test (TMT) – that are known to be impaired in those disorders.
Results |
The number of perseverative errors on WCST was highest in SZ subjects and gradually decreased in SZAff, BDP and, finally in BD subjects. By contrast, SZ and SZAff subjects obtained similar scores in the TMT, as did BD and BDP patients.
Conclusions |
These results suggest that, for some deficits, there may be a continuum between SZ, SZAff and affective disorders, whereas SZAff patients most closely resemble SZ patients for other deficits. This implies that different conceptual views about schizoaffective disorder should be seen as complementary, rather than mutually exclusive.
Le texte complet de cet article est disponible en PDF.Keywords : Schizophrenia, Schizophrenia and psychosis, Schizoaffective disorder, Affective disorders, Cognition, Psychometry and assessments in psychiatry
Plan
Vol 23 - N° 1
P. 20-25 - janvier 2008 Retour au numéro
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