Delusions in schizophrenia: a phenomenological and psychological exploration.

Abstract:

:The psychopathological basis of delusions in schizophrenia is poorly understood. The most enduring of several early theories has suggested a causal link with formal thought disorder, whereas recent approaches have proposed relationships with a variety of cognitive abnormalities. The correlations of delusions with other schizophrenic symptoms and with cognitive functions including semantic memory, executive function, and also probabilistic reasoning bias, were examined in a series of (overlapping) groups of 43-79 schizophrenic patients. Delusions were found to be significantly correlated with formal thought disorder, with evidence for a particular link between bizarreness and fragmentariness of delusions and "loosening of association". Delusions were not significantly correlated with overall intellectual function or memory, although there was some suggestion of a complex interaction between delusions, formal thought disorder, and semantic memory impairment. No association between delusions, formal thought disorder, and any measure of executive function was found. Although, as a group, schizophrenic patients showed evidence of probabilistic reasoning bias, this was unrelated to presence and severity of delusions.

journal_name

Cogn Neuropsychiatry

authors

Bentham AM,McKay AP,Quemada I,Clare L,Eastwood N,McKenna PJ

doi

10.1080/135468096396451

subject

Has Abstract

pub_date

1996-11-01 00:00:00

pages

289-304

issue

4

eissn

1354-6805

issn

1464-0619

journal_volume

1

pub_type

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