Mandell R J, Nelson D L, Cermak S A
Am J Occup Ther. 1984 Feb;38(2):114-20. doi: 10.5014/ajot.38.2.114.
This study was designed to investigate differences in the degree of manual lateralization between right-handed and left-handed normal boys. Sixty-three 5, 7, and 9 year olds were tested on the Minnesota Rate of Manipulation Test (displacing subtest and turning subtest), the Finger Tapping Test, the Purdue Pegboard (placing subtest and assembly subtest), and the Southern California Motor Accuracy Test--Revised. Significant differences between right- and left-handed subjects were obtained on two of the six measures, and a third measure approached significance, with less lateralization among the left handers than among the right handers. Subsequent analyses indicated that differences in lateralization were significant or near-significant in the 5 and 7 year olds. By 9 years of age, right- and left-handed subjects no longer differed in the degree of laterality. Differences in degree of laterality, or the lack of such differences, between young right- and left-handed boys might be a function of the nature of the fine motor task or a function of the child's previous experience with the task.
本研究旨在调查右利手和左利手正常男孩在手动偏侧化程度上的差异。对63名5岁、7岁和9岁的儿童进行了明尼苏达操作速度测验（移位子测验和旋转子测验）、手指敲击测验、普渡钉板测验（放置子测验和组装子测验）以及修订后的南加州运动准确性测验。在六项测量中的两项上，右利手和左利手受试者之间存在显著差异，第三项测量接近显著水平，左利手者的偏侧化程度低于右利手者。后续分析表明，5岁和7岁儿童在偏侧化方面的差异显著或接近显著。到9岁时，右利手和左利手受试者在偏侧化程度上不再有差异。年轻右利手和左利手男孩在偏侧化程度上的差异或缺乏这种差异，可能是精细运动任务性质的作用，也可能是儿童先前对该任务的经验的作用。
