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Impaired effortful cognition in depression.
M E Tancer1, T M Brown, D L Evans
1Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill 27599.
Psychiatry Research
|February 1, 1990
Summary
Major depression is linked to impaired effortful cognitive functions, not effortless ones. This study confirms depressed patients struggle with demanding tasks compared to psychiatric controls.
Area of Science:
- Cognitive Neuroscience
- Psychiatry
Background:
- Previous research suggests patients with major depression exhibit deficits in effortful cognitive functions.
- It remains unclear if these deficits are specific to major depression or a general consequence of psychiatric illness and hospitalization.
Purpose of the Study:
- To investigate whether cognitive deficits in major depression are specific to the illness or related to hospitalization.
- To differentiate between effortful and effortless cognitive task performance in depressed patients.
Main Methods:
- Administered effort-demanding and effortless cognitive tasks to 17 inpatients with major affective disorder and 17 hospitalized psychiatric controls.
- Compared performance on these tasks between the two groups.
Main Results:
- Depressed patients performed significantly worse on effort-demanding cognitive tasks compared to psychiatric controls.
- No significant differences were observed between the groups on effortless cognitive tasks.
Conclusions:
- Findings indicate that major depression is associated with impairments in effortful cognitive processing.
- These deficits appear specific to the depressive state rather than solely a result of psychiatric hospitalization.