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Numerical distance effect in patients with schizophrenia
Ali Mohammad Pourrahimi1, Shahrzad Mazhari1, Mohammad Shabani1
1Neuroscience Research Centre, Institute of Neuropharmacology Kerman University of Medical Sciences, Kerman, Iran.
Neuroscience Letters
|February 5, 2016
Summary
This study found that individuals with schizophrenia exhibit a preserved distance effect in numerical processing, similar to healthy controls. This suggests automatic numerical cognition remains intact despite cognitive impairments in schizophrenia.
Area of Science:
- Cognitive psychology
- Neuroscience
- Psychiatry
Background:
- Growing evidence suggests number representation is impaired in schizophrenia.
- The numerical distance effect has not been previously studied in schizophrenia patients.
Purpose of the Study:
- To investigate the numerical distance effect in patients with schizophrenia.
- To compare numerical processing between schizophrenia patients and healthy controls.
Main Methods:
- Assessed the distance effect using two number size comparison tasks.
- Utilized number references of 5 and 7.
- Included 23 patients with schizophrenia and 28 healthy controls.
Main Results:
- Both groups showed increased response times and error rates as the distance between numbers decreased.
- Schizophrenia patients were significantly slower and made more errors than controls.
- The pattern of the distance effect was similar across both groups.
Conclusions:
- The numerical distance effect is present in patients with schizophrenia, similar to healthy individuals.
- Automatic numerical processing appears to be preserved in schizophrenia.
- Further research is needed to understand the specific cognitive mechanisms affected in schizophrenia.
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