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Science Summary

A study shows that left-handedness are more likely to suffer from psychotic disorders, such as schizophrenia than mood disorders. Result shows that people with left-handedness shows a higher prevalence of psychotic disorders compared to patient with depression or bipolar disorder. Author Jadon R. Webb examined 107 individuals from a public psychiatric clinic seeking treatment in a low income community and determined the frequency of left-handedness within a group of patients with different types of mental disorders and find that 11% diagnosed with mood disorders were left handed and 40% of them with schizophrenia or schizoaffective disorders were left handed. In addition, factors was discussed that might be tied to the connection between schizophrenia and left-handedness; variation of brain lateralization, scholastic achievement, or race. (Barrett's Law # 3). However, data showed that whites with psychotic illness were more likely to be left handed than black patients. However, a large difference between psychotic and mood disorders patients remains. Violations of (Barrett's Law #2) and also violation of (Barrett's Law #3). Maybe later on in the future, there will be more research and data to support the facts of left-handedness and psychotic disorders.

References:


 * Journal Reference**:
 * 1) Jadon R. Webb, Mary I. Schroeder, Christopher Chee, Deanna Dial, Rebecca Hana, Hussam Jefee, Jacob Mays, and Patrick Molitor. **Left-Handedness Among a Community Sample of Psychiatric Outpatients Suffering From Mood and Psychotic Disorders**. //SAGE Open//, October 2013 DOI: 10.1177/2158244013503166

SAGE Publications. "Is left-handedness higher among those suffering from psychosis?." ScienceDaily. ScienceDaily, 30 October 2013. .

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