As shown by a series of previous studies, ambiguous human bodies performing unimanual or unipedal actions tend to be perceived more frequently as right-handed or right-footed rather than left-handed or left-footed, which indicates a perceptual and attentional bias toward the right side of others’ body. However, none of such studies assessed whether the relative strength of such a bias differs between the upper and lower limbs. Indeed, given that the prevalence of right-handedness is slightly larger than that of right-footedness, and given that hands provide more information than feet as regards both communicative and aggressive acts, it is plausible that the bias toward the right side of human bodies should be stronger for the hand than for the foot. We performed three experiments in each of which participants had to indicate the rotating direction (revealing the perceived handedness/footedness) of ambiguous human figures with either one limb (arm or leg) or two limbs (one arm and the contralateral leg) extended. The hypothesized advantage of the right hand over the right foot was found in both the second and the third experiment.

中文翻译：

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对他人的偏见比手更强

如先前的一系列研究所示，执行单手或单足动作的模棱两可的人体往往更常被视为右手或右脚，而不是左手或左脚，这表明在感知和注意力上偏向​​于他人身体的右侧。然而，这些研究都没有评估这种偏倚的相对强度在上下肢之间是否存在差异。的确，鉴于右撇子的流行率略高于右撇子的流行率，并且鉴于手在交际和侵略性行为方面的信息都超过了双脚，因此对人体右侧的偏见似乎是合理的手比脚要强。我们进行了三个实验，每个实验中的参与者都必须指出am昧的人物的旋转方向（露出感知的手部/脚部姿势），其中一只肢体（手臂或腿）或两条肢体（一只手臂和对侧腿）伸展。在第二个和第三个实验中都发现了右手胜过右脚的假设优势。