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Strong mixed-handedness in schizophrenia.

Felipe Ortuño1, Pilar López, Ignacio Landecho

  • 1Department of Psychiatry and Medical Psychology, University of Navarra Medical School, Pamplona, Spain.

International Journal of Psychiatry in Clinical Practice
|June 17, 2014
PubMed
Summary
This summary is machine-generated.

Schizophrenia may be linked to mixed-handedness (MH), particularly in males. This study found a significant association between strong MH and schizophrenia, suggesting a potential neurological indicator.

Keywords:
Annett′s hand preference questionnaireSchizophrenialateralitymixed-handedness

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Human Lateralization

Background:

  • Schizophrenia's lateralization remains debated.
  • Previous studies show mixed results regarding handedness in schizophrenia.
  • Lack of specificity in differentiating left-handedness from mixed-handedness (MH) in prior research.

Purpose of the Study:

  • To investigate the relationship between mixed-handedness (MH) and schizophrenia.
  • To address the specificity issue in previous handedness studies on schizophrenia.
  • To explore sex differences in the association between MH and schizophrenia.

Main Methods:

  • Utilized Annett's hand preference questionnaire for accurate assessment.
  • Differentiated between left-handedness and mixed-handedness (MH).
  • Conducted sex-specific analysis on a small patient cohort.

Main Results:

  • Observed a significant relationship between strong mixed-handedness (MH) and schizophrenia in male patients.
  • Highlighted the importance of sex differentiation in handedness studies.
  • Confirmed a shift away from dexterity in schizophrenic patients, with specific findings for MH.

Conclusions:

  • Strong mixed-handedness (MH) is significantly associated with schizophrenia in males.
  • Accurate assessment of handedness, including MH, is crucial for understanding schizophrenia.
  • Sex-specific analyses are vital for uncovering nuanced relationships in neurological disorders.