| Summary: | 碩士 === 義守大學 === 工業工程與管理學系碩士班 === 95 === The population of older adults in our society is increasing, which makes human-computer interaction in aging an important issue when we design digital interfaces. The purpose of the present study is thus to investigate older adults’ visual fatigue and performance in the use of TFT-LCD (Thin Film Transistor Liquid Crystal Display). An experiment where age (older vs. young) and display polarity (positive vs. negative) were manipulated as factors was first conducted to determine the optimal display background. In the first experiment, visual fatigue was measured by CFF (Critical Flicker Fusion) and visual performance was measured by the searching hit rate. The results showed that the negative polarity resulted in less fatigue for CFF and searching hit rate, particularly for the older subject. A subsequent experiment with all test materials displayed in a negative interface followed where age (old vs. young), font size (12 vs. 14 points), and interline spacing (single vs. double) were designed as the factors. A significant interaction indicates that the combination of 14-point font and double interline space resulted in the best visual search performance, with the effect particularly pronounced for the older subject. Implications for the design of TFT-LCD based display for with age considerations were discussed.
|
|---|
