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Self-perceived cognitive functioning does not correlate with objective measures of cognition in schizophrenia
Ines Johnson1, Karim Tabbane, Lamia Dellagi
1Research Unit "Cognitive dysfunctions in psychiatric diseases," Faculty of Medicine of Tunis, University "Tunis El-Manar," Department of Psychiatry "B," Razi Hospital, La Manouba, Tunisia. ines.johnson@yahoo.fr
Comprehensive Psychiatry
|February 8, 2011
Summary
Self-perceived cognitive deficits in schizophrenia patients, measured by the Subjective Scale To Investigate Cognition into Schizophrenia Tunisian Arabic Version (SSTICS_tun_arab), showed no correlation with objective cognitive performance. This suggests cognitive insight is independent of actual cognitive deficits.
Area of Science:
- Neuroscience
- Psychiatry
- Cognitive Psychology
Background:
- Recent research highlights growing interest in self-perceived cognitive deficits within schizophrenia studies.
- The Subjective Scale To Investigate Cognition into Schizophrenia Tunisian Arabic Version (SSTICS_tun_arab) was previously validated for assessing cognitive complaints in schizophrenia patients.
Purpose of the Study:
- To investigate the relationship between scores on the SSTICS_tun_arab and objective cognitive performance in schizophrenia patients.
- To explore the concept of cognitive insight in relation to objective cognitive functioning.
Main Methods:
- One hundred four patients diagnosed with schizophrenia spectrum disorders participated in the study.
- Participants completed the Positive and Negative Syndrome Scale, Global Assessment Functioning Scale, Calgary Depression Scale, SSTICS_tun_arab, and a comprehensive cognitive battery.
Main Results:
- No statistically significant correlations were identified between objective neuropsychological test performances and the scores obtained from the SSTICS_tun_arab.
- This indicates a dissociation between subjective reports of cognitive difficulties and objective measures of cognitive function.
Conclusions:
- The findings support the hypothesis that self-perceived cognitive functioning is independent of objective neuropsychological deficits in individuals with schizophrenia.
- The results suggest that insight into mental illness is not a singular construct but likely comprises distinct facets, including cognitive insight.
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