Effects of Chinese character size,number of characters per line,and number of menu items on visual search task on tablet computer displays for different age groups |
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| Affiliation: | 1. Department of Industrial Engineering and Engineering Management, National Tsing Hua University, NO. 101, Sec. 2, Kuang Fu Road, Hsinchu, 30013, Taiwan, ROC;2. Department of Industrial Engineering and Enterprise Information, Tunghai University, NO. 1727, Sec. 4, Taiwan Boulevard, Xitun District, Taichung, 40704, Taiwan, ROC;1. School of Humanity, Art & Digital Media, Hangzhou Dianzi University, PR China;2. Department of Industrial Design, Zhejiang University, PR China;3. Department of Computer & Systems Science, Stockholm University, Sweden;1. Safety and Accident Investigation Centre, Cranfield University, Bedfordshire, UK;2. Flight Technology College, Civil Aviation University of China, Tianjin, China;3. Thales Alenia Space Deutschland GmbH, Ditzingen, Germany;4. Final Assembly Department, Commercial Aircraft Corporation of China, Shanghai, China;1. Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin, 300354, China;2. Tianjin Ren''ai College, Tianjin, 301636, China;3. Shanghai Institute of Aerospace System Engineering, Shanghai, 201109, China;1. Department of Industrial Engineering and Management, National Taipei University of Technology, Taipei, 10608, Taiwan;2. Human Factors Engineering, Department of Health Sciences and Technology, ETH, Zürich, Switzerland;1. Department of Industrial Design, National Cheng Kung University, No.1, University Road, Tainan City, 701, Taiwan;2. Department of Statistics, National Cheng Kung University, No.1, University Road, Tainan City, 701, Taiwan |
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| Abstract: | The goal of this study was to investigate the effects of Chinese character size, number of characters per line, and number of menu items on visual search task performance on a tablet computer for different age group users. Forty-two participants participated the visual search experiment. Gender, age group (younger, middle-aged, and older), Chinese character size (15, 17, 19, 21, 23, and 25 point), number of characters per line (2–5 characters, 9–14 characters, and 15–18 characters), and number of menu items (5, 7, 9, 11, and 13 items) were the independent variables. The dependent variables included search time and error rate. Gender had a large effect size on search time. Female participants had a faster search time than male participants. Significant differences and large effect sizes were found in search performance for different character sizes, number of characters per line, and number of menu items. Nine to fourteen characters per line achieved the fastest search time and lowest error rate. The fastest search time was for a 19-point character size in the younger group; 21-point character size in the middle-aged group; and 23-point character size in the older group. Besides, the fastest search time was found when showing 9 items in the younger group; 7 items in the middle-aged group; and 5 items in the older group. The optimum visual search performance was achieved with 19-point character size showing 9 items and 9–14 characters per line for the younger group; 21-point character size showing 7 items and 9–14 characters per line for the middle-aged group; and 23-point character size showing 5 items and 9–14 characters per line for the older group. The results provide useful information for tablet computer interface-presentations for different age group users. |
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| Keywords: | User interface evaluation Search time Error rate Chinese fonts Different age user |
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