Fine E M, Peli E
Schepens Eye Research Institute, Harvard Medical School, Boston, Massachusetts 02114, USA.
J Opt Soc Am A Opt Image Sci Vis. 1995 Oct;12(10):2286-92. doi: 10.1364/josaa.12.002286.
Visually impaired observers read dynamically displayed text faster than text displayed in a normal page view. The goal of this study was to compare reading rates from two dynamic-presentation methods that have been proposed to facilitate reading from computer-based displays. Prior research has shown that both normally sighted and low-vision observers read text displayed to the same location, one word at a time [known as rapid serial visual presentation (RSVP)], faster than a page of text. A similar comparison with text scrolled continuously across the screen also shows faster reading for low-vision patients, but the relative change from a standard page view is substantially less (15% faster for the scroll display versus 80% faster for RSVP). In this study we directly compared these techniques. For those with normal vision, reading from the RSVP display was 1.3 times faster than reading from the scroll display [t(9) = 3.32, P = 0.009]. Although the difference in reading rates for the visually impaired group did not reach statistical significance, as a group they read 13% slower from the RSVP than from the scroll display.
视力受损的观察者阅读动态显示的文本比正常页面视图中显示的文本速度更快。本研究的目的是比较两种为方便从计算机显示器阅读而提出的动态呈现方法的阅读速度。先前的研究表明，正常视力和低视力的观察者阅读一次显示在同一位置的一个单词的文本（称为快速序列视觉呈现，RSVP），比阅读一整页文本的速度更快。对在屏幕上连续滚动的文本进行的类似比较也显示，低视力患者的阅读速度更快，但与标准页面视图相比，相对变化要小得多（滚动显示快15%，而RSVP快80%）。在本研究中，我们直接比较了这些技术。对于视力正常的人来说，从RSVP显示器阅读的速度比从滚动显示器阅读快1.3倍[t(9) = 3.32, P = 0.009]。虽然视力受损组的阅读速度差异没有达到统计学显著性，但作为一个群体，他们从RSVP阅读的速度比从滚动显示器慢13%。
