PSYCH OpenIR  > 社会与工程心理学研究室
Alternative TitleStudy on the Factors Influencing Searching and Comparing Grey Objects on a PC Screen
Thesis Advisor张侃
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Discipline心理学
Keyword界面设计 图像呈现 医学图像 电脑屏幕有限资源问题 核磁共振图像(MRI) 信息加工 图形搜索 搜索策略


Other Abstract

    Based on the field investigation for the user interface design of the telemedicine systems currently used at the local hospitals, a question "How do the number of pictures and the picture size displayed on the software interface affect the doctors' image viewing and diagnosis performance and their information processing behavior on a desktop computer screen?" was raised. To answer it, two laboratory experiments, the experiment task of which was to simulate the doctors' task of image viewing and diagnosis on a PC screen, were conducted to explore how several factors including task difficulty (Size difference between target objects and answer objects), the number of pictures displayed on one screen, picture size, etc. affect people's performance and information processing on grey-scale objects searching and comparing. Results of the study showed that;
    (1) Task difficulty (Size difference between target objects and answer objects) demonstrated significant main effect on users' performance both on accuracy and reaction time. The smaller the size difference between target and answer objects, the higher the task difficulty, people perform slower and make more errors; while the bigger the size difference between target and answer objects, the lower the task difficulty, people perform faster with a higher accuracy rate.
    (2) Image display interface (the number of pictures displayed on one screen and the size of each displayed picture) affect significantly the users' task performance and satisfaction toward the interface.The more pictures displayed on one screen, the shorter the users' reaction time and the higher the users' satisfaction; the fewer pictures displayed on one screen, the longer users' reaction time and the
lower users' satisfaction. The number of pictures displayed on one screen has no significant effect to users' taske accuracy rate. The larger the picture size displayed, the lower task difficulty; while the smaller the pictuer size displayed, the higher the task difficulty. But if the size difference displayed on the screen is beyond human's visual limen on distiguishing objects' size difference, the displayed picture size has no significant effect on users' performance.
    (3) The number of pictures displayed on one screen has some effect on people's strategy of distributing their attentional resources. People seem to prefer random search strategy on the interface with many pictures displayed. But this conclusion still needs more specific research to confirm in future.
    (4) The user's workload while completing tasks on the screen decided the best interface on which the number of pictures displayed and the picture size were optimized for a best perfomace. If the workload is higher than or equal to user's information processing ability, the user make a best use of his or her information processing abilty and the performance is the best while the reaction time is relatively constant. The workload was decided by several factors including task difficulty, the number of pictures displayed, the search strategy and etc.

Subject Area应用心理学
Document Type学位论文
Recommended Citation
GB/T 7714
徐毅斐. 电脑呈现灰度图形搜索和比较任务影响因素的研究[D]. 北京. 中国科学院研究生院,2003.
Files in This Item:
File Name/Size DocType Version Access License
徐毅斐-硕士学位论文.pdf(6268KB)学位论文 限制开放CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[徐毅斐]'s Articles
Baidu academic
Similar articles in Baidu academic
[徐毅斐]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[徐毅斐]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 徐毅斐-硕士学位论文.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.