著者

阿佐 宏一郎 小田 浩一

出版者

The Illuminating Engineering Institute of Japan

雑誌

照明学会誌 (ISSN:00192341)

巻号頁・発行日

vol.94, no.5, pp.283-288, 2010-05-01

被引用文献数

1

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The estimation of optimal print size for reading is often essential in clinical treatment and/or universal design; however, it is not known how to calculate the proper letter size for reading with maximum efficiency. Psychophysics studies have revealed psychometric functions of reading that exhibit a hill-like shape with a plateau of maximum speed and a downfall beyond Critical Print Size (CPS). To control the magnification rate of visual aids for patients with visual impairments, CPS that can indicate the boundary of maximum efficiency is now becoming a noteworthy index to determine optimal letter size. In addition to reading, word searching is also an important task for our living. However, the CPS of word search tasks has not been examined yet. We estimated the CPS of word search from the results of two experiments focused on searching for words in Chinese characters and Japanese alphabet (Katakana: square forms) in Japanese. The functions of the searching tasks showed a hill-like shape almost identical to the reading tasks but with elevated speed, and the CPS were stable around 0 logMAR in both the reading and the searching tasks. Hence, CPS is unsusceptible to tasks and can function as a robust marker for the smallest print size with maximum speed. This finding indicates that CPS is the threshold of proficiency (maximum/reduced) beyond the threshold of vision (visible/invisible). CPS can be a meaningful index to achieve the appropriate control of print size and subsequently help people with visual problems.

著者

与那覇 信恵 牛江 ゆき子 阿佐 宏一郎 棚橋 サンドラ ギルナー リア

出版者

文京学院大学

雑誌

基盤研究(C)

巻号頁・発行日

2010

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本研究は、高い効果が確認されている語彙指導法に基づき、英語カリキュラムに連動した語を、大学生の生活実態に合った方法で学習することを可能にする語彙学習システムを開発することを目的として実施した。 本研究により、部品を用意すれば、 ダウンロードして使用できる語彙教材とテストが自動生成されるシステムと、4つの英語授業の指導内容と連動した計1680語分の語彙教材コンテンツが完成した。