On the readability and useful visual field of scrolling text

论滚动文本的可读性和有用的视野

• 批准号: 17530524
• 负责人: KIKUCHI Tadashi
• 金额: $ 2.3万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17530524/
• 关键词: scrolling text; reading; useful visual field

Scrolling text refers to the media in which text is scrolling from right to left in a limited space. We explored the properties of presentation to read scrolling text comfortably. The primary findings could be summarized as follows.1) We made a text scroll in a viewing window. The width of the window was varied from 1 to 15 characters, and observers were asked to adjust a scrolling rate to read the text comfortably. Optimal scrolling rate is increased rapidly with the increase of the window width up to 5 characters. Then the rate of increase gradually reduced and almost leveled off up to 15 characters. The scrolling rate of devices placed on the streets was found two times slower than the present results.2) We manipulated the number of characters (2,5,and 15) and scrolling rate (based on the preliminary experiments, optimal, two times faster and two times slower than the optimal rate). Observers were asked to evaluate their impressions according to 14 items by using a 7-point scale. The 5 and 15 characters-number conditions impressed the observers similarly. Moreover, in all characters-number conditions, faster presentations were evaluated as "hard to apprehend" and slower presentations as "irritating".3) We briefly presented a Hiragana character above or below the left, center, or right corner of the viewing window. Observers were asked to ignore or discriminate the Hiragana character, while adjusting scrolling rate to read the text comfortably. When the Hiragana character was presented above or below the right corner of the viewing window, scrolling rate was significantly slower than when the Hiragana character was presented at the other positions. This indicates that useful visual field is distributed widely on the right side of the viewing window when observers are reading a scrolling text.

滚动文本是指文本在有限的空间内从右向左滚动的媒体。我们探索了演示的属性，以便舒适地阅读滚动文本。主要发现可总结如下。1）我们在查看窗口中制作了文本滚动。窗口的宽度从 1 到 15 个字符不等，观察者被要求调整滚动速率以舒适地阅读文本。随着窗口宽度增加到 5 个字符，最佳滚动速率迅速增加。然后增幅逐渐减小，直到15个字符几乎持平。发现放置在街道上的设备的滚动速率比当前结果慢两倍。2）我们操纵字符数（2,5 和 15）和滚动速率（基于初步实验，最佳，快两倍并且比最佳速率慢两倍）。观察者被要求使用 7 分制根据 14 个项目评估他们的印象。 5 个和 15 个字符的数字条件也给观察者留下了类似的印象。此外，在所有字符数条件下，较快的呈现被评价为“难以理解”，较慢的呈现被评价为“烦人”。3) 我们在查看窗口的左、中或右角上方或下方简要呈现了平假名字符。观察者被要求忽略或区分平假名字符，同时调整滚动速率以舒适地阅读文本。当平假名字符呈现在查看窗口的右角上方或下方时，滚动速率明显慢于当平假名字符呈现在其他位置时。这表明当观察者阅读滚动文本时，有用的视野广泛分布在观察窗口的右侧。