| Summary: | 碩士 === 國立成功大學 === 認知科學研究所 === 99 === The use of the internet population in the world, in terms of age, the fastest growing group is undoubtedly senior population in the current. However, some web design methods are recurrent problems for senior citizens because of their physical and cognitive function in the degradation. Although previous studies in web design for senior citizens raised some design principles, some principles were only for English text, Chinese text cannot be applied on. In the past, while there was also Chinese researches appeared, unfortunately, they were not comprehensive, only considered individual elements. In this study, based on the design principles that past literature raised, I build a seniors website of Chinese version. The study integrates many elements, then provides a set of web usability guidelines for senior citizens. Of course, the guidelines suits to Chinese text.
In the first experiment, the subjects selected their most favorite top three from nine pages in the same content. The pages were composed of three fonts(新細明體、標楷體、微軟正黑體) from three font sizes(26px, 21px, 16px). Then they reproduced the spacing for the article of five scales, according to the first font combination they chose. The average spacing was the optimal size for the subject. For the results, the most popular one was 26px 微軟正黑體, and the optimum spacing is the line height of 41.55px. I built a new version of web site for Tainan Senior Citizen Center grounded on the results of the first experiment, and the web design principles for senior citizens raised in previous studies. The new web site was old web-based, the content amplified, and switching to a hierarchical classification of information presented. The navigation of new version was totally different from old version. In the second experiment, the subjects had to complete ten tasks in limitation of time on both old web site and new web site. This was usability test. Finally they wrote questionnaire of satisfaction for the two web sites.
The results of the second experiment showed that subjects spent shorter time on old web page in the first half of ten tasks, but spent shorter time on new web page in the second half of ten tasks. We can see there is higher barrier to entry in new web page. But when subjects were used of it, they could find information faster on new web page than on old web page. Error clicks on new web page were seven the number of tasks more than on old web page. It is visible as the page classes increasing, the number of clicks also increases. According to the characteristics of the tasks, we can see some design methods of the new version were very good, but some were quite poor so that made subjects click several times in error. Interestingly, in the same task, there was as many subjects failed on new web as on old web. It shows users will have different cognitive connections to a concept. So a good design should include all cognitive connections potential. In satisfaction, new version were all higher than old version in the six indicators, indicating the subjects did prefer the new web page applied for senior citizens web page design principles.
Raised in the literature from the past for seniors to use the web design principles, integrating the two experimental results obtained, and certain principles based on experimental results slightly modified, this study proposes a senior citizens building web usability guidelines. The guidelines can be constructed in accordance with the use of the website for senior citizens, but also need to pay attention to the criteria applied when implementing the design, I discovered that it still tested well-designed. As this study instead of pure class and the classification of visual search, if the user understands and effective delivery, if users can not understand is greatly reduced. Expect this study to promote government and industry in the future pay more attention to senior citizens dedicated web page settings.
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