Davidson P W, Appelle S, Haber R N
University of Rochester School of Medicine and Dentistry, NY 14642.
Res Dev Disabil. 1992;13(2):99-111. doi: 10.1016/0891-4222(92)90018-2.
A cell-by-cell analysis of finger movements of blind braille readers was conducted to separate, catalogue, and measure the components of scanning movements across braille cells as a function of reading proficiency. Particular attention was paid to the hypothesis that low- and high-proficiency readers could be differentiated by scanning differences on cells over which the finger paused. On cells containing pauses, high-proficiency readers paused for significantly longer durations than did low-proficiency readers, and left-finger pause duration was longer than right-finger pause duration. High-proficiency readers paused on fewer cells with the right finger than did low-proficiency readers. Finger speed (time to traverse a cell independent of pauses and direction changes and expressed in cells per second) was unaffected by reading proficiency. Left-finger speed was faster than right-finger speed, and backward scanning was faster than forward scanning. High-proficiency readers scanned almost twice as many cells with two hands as did low-proficiency readers. These results confirm earlier reports of the superiority of bimanual reading, and suggest that the two hands may perform different functions, allowing pausing for rescanning to occur simultaneously with reading new material.
对盲文读者手指运动进行了逐细胞分析，以根据阅读熟练程度分离、分类并测量跨越盲文细胞的扫描运动成分。特别关注这样一个假设，即低熟练程度和高熟练程度的读者可以通过手指停顿的细胞上的扫描差异来区分。在有停顿的细胞上，高熟练程度的读者停顿时间明显长于低熟练程度的读者，且左手手指停顿时间长于右手手指停顿时间。高熟练程度的读者右手手指停顿的细胞比低熟练程度的读者少。手指速度（穿越一个细胞的时间，不考虑停顿和方向变化，以每秒细胞数表示）不受阅读熟练程度的影响。左手手指速度比右手手指速度快，向后扫描比向前扫描快。高熟练程度的读者用双手扫描的细胞数量几乎是低熟练程度读者的两倍。这些结果证实了早期关于双手阅读优越性的报道，并表明两只手可能执行不同的功能，使重新扫描的停顿能够与阅读新材料同时发生。
