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Measuring cognitive insight in schizophrenia and bipolar disorder: a comparative study
John A Engh1, Svein Friis, Astrid B Birkenaes
1Division of Psychiatry, Ulleval University Hospital, Oslo, Norway. john.engh@medisin.uio.no
BMC Psychiatry
|December 13, 2007
Summary
The Beck Cognitive Insight Scale (BCIS) is useful for assessing cognitive insight in patients with schizophrenia and bipolar disorder. It shows good reliability and applicability across both groups, aiding in understanding self-reflection and self-certainty.
Area of Science:
- Psychiatry
- Cognitive Psychology
Background:
- The Beck Cognitive Insight Scale (BCIS) assesses self-reflection on anomalous experiences and interpretations.
- It was initially developed and validated for schizophrenia patients.
- This study investigated its utility in bipolar disorder patients.
Purpose of the Study:
- To evaluate the applicability of the BCIS in patients with bipolar disorder.
- To explore the relationship between cognitive insight (BCIS) and illness insight in schizophrenia and bipolar disorder.
- To compare BCIS performance across schizophrenia, bipolar disorder, and control groups.
Main Methods:
- Administered the 15-item BCIS self-report inventory to patients with schizophrenia (n=143), bipolar disorder (n=92), and controls (n=64).
- The BCIS comprises two subscales: self-reflectiveness and self-certainty.
- Correlated BCIS scores with established insight measures (PANSS).
Main Results:
- The BCIS demonstrated good internal consistency for all groups.
- Mean subscale scores did not significantly differ between schizophrenia, bipolar disorder, and control groups.
- Self-certainty scores correlated significantly with PANSS insight items in schizophrenia but not in bipolar disorder.
Conclusions:
- The BCIS is applicable to both bipolar disorder and schizophrenia patients.
- The scale can be used with controls if items on psychotic experiences are removed.
- High self-certainty may indicate poor insight in schizophrenia; BCIS subscales are largely independent of traditional insight measures in bipolar disorder.
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