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Absence of established sex differences in patients with schizophrenia on a two-dimensional object array task
Seth L Shipman1, Elizabeth K Baker, Godfrey Pearlson
1Olin Neuropsychiatry Research Center Institute of Living, Hartford, CT 06106, United States.
Psychiatry Research
|March 13, 2009
Summary
In schizophrenia patients, the typical female advantage in object location memory is lost. This finding highlights how schizophrenia impacts cognitive sex differences, affecting illness presentation.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Psychiatry
Background:
- Sex differences are well-documented in schizophrenia, affecting illness onset, symptoms, and brain structure.
- Established cognitive sex differences exist in healthy populations, but their interaction with schizophrenia is under-researched.
Purpose of the Study:
- To investigate the impact of schizophrenia on established cognitive sex differences, specifically object location memory.
- To examine whether the typical female advantage in object location memory persists in patients with schizophrenia.
Main Methods:
- A two-dimensional object location memory task was administered to 25 patients with schizophrenia and 17 healthy controls.
- Performance on the object location memory task was compared between sexes within both the patient and control groups.
Main Results:
- Healthy females outperformed healthy males on the object location memory task, replicating previous findings.
- The significant female advantage observed in healthy controls was completely absent in patients with schizophrenia.
Conclusions:
- Schizophrenia eliminates the typical female advantage in object location memory.
- These findings suggest that schizophrenia differentially affects cognitive functions influenced by sex, impacting the interpretation of sex-based differences in the disorder.
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