School of Psychology, The University of Birmingham, Birmingham, UK.
Psychiatry Res. 2011 May 15;187(1-2):89-93. doi: 10.1016/j.psychres.2010.11.019. Epub 2010 Dec 22.
Research on the sub-clinical condition of schizotypy suggests that it is associated with mixed handedness. To date, however, this research has focussed on undergraduate populations. If the association between schizotypy and mixed-handedness is the result of an underlying neurological trait, it is important to demonstrate that the effect extends to the general population. With this in mind, 699 participants were drawn from a wide community sample. Schizotypy was measured using the Psychosis Proneness Questionnaire and handedness was assessed using the Annett inventory. To avoid the sometimes arbitrary definitions of left-, right- and mixed-handed, regression analyses were used to explore the data. There was no evidence of a difference in schizotypy between individuals with a left- or right-hand preference. People with a mixed-hand preference, however, had higher scores on PER-MAG (Perceptual Aberration and Magical Ideation) and HYP-IMP (Hypomania and Impulsive Non-Conformity) scales (positive traits). No effect was observed for the SAN (Social Anhedonia) and PAN (Physical Anhedonia) scales (negative traits). The nature of the association between schizotypy and handedness observed in the current study is similar to that reported for student populations. The possibility that the association is related to response biases or a biological mechanism is discussed.
对分裂型特质的亚临床状态的研究表明，它与混合利手有关。然而，迄今为止，这项研究主要集中在本科生群体。如果分裂型特质和混合利手之间的关联是潜在神经特质的结果，那么证明这种效应扩展到一般人群就很重要。考虑到这一点，从广泛的社区样本中抽取了 699 名参与者。使用精神病倾向问卷测量分裂型特质，使用安尼特量表评估利手性。为了避免左、右和混合利手的有时任意定义，使用回归分析来探索数据。具有左利手或右利手偏好的个体之间没有分裂型特质差异的证据。然而，具有混合利手偏好的人在 PER-MAG（感知偏差和神奇思维）和 HYP-IMP（轻躁狂和冲动非遵从性）量表上得分更高（阳性特质）。SAN（社交快感缺失）和 PAN（身体快感缺失）量表（阴性特质）没有观察到影响。当前研究中观察到的分裂型特质和利手之间的关联性质与在学生群体中报告的相似。讨论了这种关联与反应偏差或生物机制有关的可能性。
