可用性指南：设计过程与结果评估
1.1提供可用内容
相关重要指数：5级
证据强度：5级
文件类型：指南
主题：
UCD（以用户为中心的设计，User-Centered Design）
指南:
给用户提供有趣的、有价值的、恰当的内容。
注释：
内容是一个网站所提供的信息。不要为错误的内容浪费方便访问的渠道和良好的可用性等资源。一项研究表明内容是一个网站上最重要的元素。其他研究也有报道，内容比导航、视觉设计、功能性、交互性更重要。
资源：
1. Asher, S.R. (1980). Topic interest and children’s reading comprehension. In R.J. Sprio, D.C. Bruce, & W.F. Brewer (Eds.), Theoretical Issues in Reading Comprehension (pp. 525-534). Hillsdale, NJ: Lawrence Erlbaum.
2. Badre, A.N. (2002). Shaping Web Usability: Interaction Design in Context. Boston, MA: Addison Wesley Professional.
3. Baldwin, R.S., Peleg-Bruckner, Z., & McClintock, A. (1985). Effects of topic interest and prior knowledge on reading comprehension, Reading Research Quarterly, 220(4), 497-504.
4. Celsi, R. & Olson, J. (1988). The role of involvement in attention and comprehension processes. Journal of Consumer Research, 15(2), 210-224.
5. Evans, M. (1998). Web Design: An Empiricist’s Guide. Unpublished master’s thesis. Seattle: University of Washington. Retrieved May 2003,
6. Levine, R. (1996). Guide to Web Style. Sun Microsystems.
7. Nielsen, J. & Tahir, M. (2002). Homepage Usability: 50 Sites Deconstructed. Indianapolis, IN: New Riders Publishing.
8.Nielsen, J. (1997b, June). Top ten mistakes of Web management. Retrieved November 2005
9. Nielsen, J. (2000). Designing Web Usability. Indianapolis, IN: New Riders.
10. Rajani, R. & Rosenberg, D. (1999, January). Usable? ...Or not? ...Factors affecting the usability of Web sites. CMC Magazine. Retrieved November 2005
11. Sano, D. (1996). Designing Large-scale Web Sites: A Visual Design Methodology. New York: Wiley.
12. Sinha, R., Hearst, M., Ivory, M., & Draisin, M. (2001). Content or graphics? An empirical analysis of criteria for award-winning Web sites. Proceedings of the 7th Conference on Human Factors and the Web. Retrieved November 2005,
13. Spyridakis, J.H. (2000). Guidelines for authoring comprehensible web pages and evaluating their success. Technical Communication, 47(3), 359-382.
14. Stevens, K. (1980). The effect of topic interest on the reading comprehension of higher ability students. Journal of Educational Research, 73, 365-368.
相关资源：
1. Title: Whats Important to Search Engines Description: Providing useful content is one way to ensure good results with search engines
相关可用性指南：
1.Usability Guideline: Set and State Goals
名词解释：
1. 相对重要指数:Relative Importance，基于“这个准则对网站的成功有多重要”的问题对准则进行评分。
2. 证据强度：Strength of Evidence，表征证据特征的重要概念；
原文链接：
https://webstandards.hhs.gov/guidelines/1