Research has shown that persons with mixed hand preference (i.e., who report using their non-dominant hand for at least some manual activities) display an increased tendency to update beliefs in response to information inconsistent with those beliefs. This has been interpreted as reflecting the fact that the left hemisphere maintains our current beliefs while the right hemisphere evaluates and updates those beliefs when appropriate. Belief evaluation is thus dependent on interhemispheric interaction, and mixed-handedness is associated with increased interhemispheric interaction. In Experiment 1 mixed-handers exhibited higher levels of persuasion in a standard attitude-change paradigm, while in Experiment 2 mixed-handers exhibited higher levels of gullibility as measured by the Barnum Effect.

中文翻译：

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混血人更容易被说服并且更容易受骗：半球之间的互动和信念更新。

研究表明，具有不同手型偏好的人（即，报告使用其非显性手进行至少一些体力活动）显示出更新信念的趋势，以响应与那些信念不一致的信息。这被解释为反映了这样一个事实：左半球保留了我们当前的信念，而右半球在适当的时候评估并更新了这些信念。因此，信仰评估取决于半球之间的相互作用，而混合姿态与增加半球之间的相互作用有关。在实验1中，混合手在标准的态度变化范例中表现出较高的说服力，而在实验2中，通过巴纳姆效应测得的混合性则表现出较高的信度。