Hicks R A, Pass K, Freeman H, Bautista J, Johnson C
Department of Psychology, San Jose State University, CA 95192-0189.
Percept Mot Skills. 1993 Dec;77(3 Pt 2):1119-22. doi: 10.2466/pms.1993.77.3f.1119.
As evidence for the hypothesis on the claim of reduced longevity for left-handers, Coren in 1989 reported data which suggested that left-handers were 1.89 times more likely to report injuries which required medical attention. This left-handed group included both left- and mixed-handed individuals. To clarify the results of his study, we repeated in part Coren's study but defined handedness so that groups of right-, mixed-, and left-handed individuals were considered. In contrast to Coren's data, we found that right- and left-handers did not differ significantly in the frequency with which they reported having experienced accidents with injury and that mixed-handers reported being significantly more likely to have had an injury-accident than either right- or left-handers. These data underscore the need to consider mixed-handedness as a separate group in studies of this type.
作为左撇子寿命缩短这一假说的证据，科伦在1989年报告的数据表明，左撇子因受伤需要就医的可能性是其他人的1.89倍。这个左撇子群体包括左利手和混合利手个体。为了阐明他的研究结果，我们部分重复了科伦的研究，但对利手进行了定义，从而将右利手、混合利手和左利手个体分组考虑。与科伦的数据相反，我们发现右利手和左利手在报告经历过受伤事故的频率上没有显著差异，而混合利手报告称发生受伤事故的可能性明显高于右利手或左利手。这些数据强调了在这类研究中需要将混合利手作为一个单独的群体来考虑。
