Hand and foot preference in young and older adults: a comment on Gabbard and Iteya.
Hand and foot preference in young and older adults: a comment on Gabbard and Iteya.
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年轻人和老年人的手脚偏好：对 Gabbard 和 Iteya 的评论。
作者：
C. Porac
在他们题为“儿童、青少年和成年人的足部偏侧性”的论文中，Gabbard和Iteya讨论了几个有趣的问题。他们提供了来自一些已发表研究的数据，这些研究显示了混合型与右脚偏好发生率的年龄差异，即与成人相比，儿童中混合型脚偏好的发生率较高，右脚偏好的发生率较低。他们的综述表明，在儿童±年轻成人年龄范围内，左脚偏好的报告发生率是相同的，并且混合脚偏好似乎比混合手偏好在儿童中更常见。Gabbard和Iteya在Annett的基于遗传的右移理论（1995）的背景下解释了他们的发现，包括可能的环境影响，这些环境影响对手和脚的偏好有不同的影响。Gabbard和Iteya正确地确定了相关研究的必要性，使用一致的测量程序，包括老年人。目前的数据报告，以响应这一呼吁，在横截面样本，涵盖了广泛的年龄范围的成年人的手和脚的偏好信息。这些数据将用于解决Gabbard和Iteya提出的问题。首先，在年轻人和老年人中，右脚、混合脚和左脚的年龄趋势是什么？第二，在成年期是否存在性别差异以及可能的年龄差异？第三，右移因素是否更可能影响明显的手偏好而不是明显的脚偏好？
In their paper entitled``Foot Laterality in Children, Adolescents, and Adults’’Gabbard and Iteya address several interesting issues. They present data from a number of published studies showing age differences in the incidence of mixed versus right foot preference, namely, a higher incidence of mixed foot preference complemented with a lower incidence of right foot preference in children as compared to adults. Their review indicates that the reported incidence of left foot preference is the same over the childhood±young adult age-range and that mixed foot preference appears to be more common than mixed hand preference among children. Gabbard and Iteya interpret their findings in the context of Annett’s genetically based right shift theory (1995) with the inclusion of possible environmental influences that differentially affect hand and foot preferences.Gabbard and Iteya correctly identify the need for relevant studies, using consistent measurement procedures, which include older adults. The present data are reported in response to this call for information on hand and foot preference in cross-sectional samples that cover a broad age-range of adults. These data will be used to address questions posed by Gabbard and Iteya. First, what are the age trends in right-, mixed-, and left-footedness among young versus older adults? Second, are there sex differences as well as possible age differences across the adult years? And, third, are right shift factors more likely to affect manifest hand preference rather than manifest foot preference?