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Although an increasing number of Web sites are devoted to providing health information to older adults, many sites have usability problems unique to this population. The purpose of this study was to explore the usability of three health-promoting Web sites specifically designed for use by older adults. This descriptive study used two usability assessment methods: (1) a heuristic evaluation by four experts in Web usability and gerontology and (2) a usability test by 10 senior Web users with a mean age of 73.9. The design aspects identified as inappropriate for seniors by experts were as follows: small font size, too much information on one page, and a failure to provide instructions. The older adults in this sample preferred a simple design with clear instructions. During testing, these individuals expressed great interest in online health information. However, they needed instructions on how to search for credible health information online. Some usability-testing methods might need to be modified for older adults' specific needs.
Nahm et al. (Mon,) studied this question.