Handedness and schizotypy: The potential effect of changing the writing-hand

Hui Chun Tsuang, Wei J. Chen, Shu Yu Kuo, Po Chang Hsiao

Research output: Contribution to journalArticle

Abstract

Mixed-handedness, which has been associated with schizotypy in recent studies, might exist for at least two different reasons: it is innate or it has been forced. We examined whether the association between mixed-handedness and schizotypy differs depending on its source. We enrolled 3485 college students in Taiwan. We used both the Perceptual Aberration Scale and Schizotypal Personality Questionnaire to assess schizotypy, and the Annett Hand Preference Questionnaire to assess handedness. Two ways of classifying handedness were examined: the three-way classification based on Annett's categories and mixed- vs. non-mixed-handedness based on Degree of Handedness. Both mixed-handedness groups showed higher positive schizotypy scores. Among mixed handers, those who had been required to change their writing hand from left to right had higher positive schizotypy scores. Being forced to change writing hand seemed to be related to a higher level of schizotypy. The potential effect of the social pressure against using the left hand for writing is discussed.

Original languageEnglish
Pages (from-to)198-203
Number of pages6
JournalPsychiatry Research
Volume242
DOIs
Publication statusPublished - Aug 30 2016

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Keywords

  • Cerebral lateralization
  • Mixed-handedness
  • Schizophrenia

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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