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Bilateral transfer deficit in schizophrenia: a trait marker
A K Biswas1, S Haque-Nizamie, R Pandey
1Central Institute of Psychiatry, Ranchi, India.
Psychiatry Research
|September 27, 1996
Summary
Schizophrenia patients exhibit a persistent deficit in bilateral skill transfer, impacting learning accuracy even after treatment. This suggests an enduring functional impairment in the disorder.
Area of Science:
- Neuroscience
- Psychiatry
- Cognitive Psychology
Background:
- Schizophrenia is a complex mental disorder affecting cognition.
- Bilateral transfer of skills, the ability to learn a task with one hand and improve with the other, is a key cognitive function.
- Previous research has explored various cognitive deficits in schizophrenia, but bilateral transfer remains less understood.
Purpose of the Study:
- To investigate the bilateral transfer of skills in patients with schizophrenia.
- To determine if this deficit persists after a period of treatment.
- To compare skill transfer in patients with first-degree relatives and healthy controls.
Main Methods:
- A mirror-drawing task was used to assess bilateral skill transfer.
- Schizophrenia patients, their first-degree relatives, and normal controls participated.
- Performance was measured in terms of response accuracy before and after a 6-week treatment period for the patient group.
Main Results:
- Schizophrenia patients demonstrated a significant deficit in bilateral skill transfer accuracy.
- This deficit was observed both before and after the 6-week treatment period.
- Patients' performance was significantly worse compared to both first-degree relatives and normal control subjects.
Conclusions:
- The findings suggest that the bilateral skill transfer deficit is an enduring functional loss in schizophrenia.
- This cognitive impairment appears resistant to short-term treatment interventions.
- Further research is warranted to understand the neural underpinnings and implications of this deficit.