In my point of view, photographs of people cannot affect my trust towards web sites. I was surprised to find there were lots of photographs of people on universities' web sites when I was searching for admission requirements of my dream university in Canada. Maybe due to cultural difference, I was wondering why they prefer to use such kind of photos and I had never related it to building trust among viewers. I believe all the information university provides on the web site should be authentic, and it must be. Trust is built on the basis of reliable news, data, etc., not upon decorations like photos.
"Ensure that a Web site’s graphics add value and increase the clarity of the information on the site".
Note that use of images should be meaningful, not leading to adverse effect. When designing the classroom anti-distraction system, I used different background images on each page, trying to make it colorful. But after I read this chapter, I realize that too colorful interface may distract users. So I tend to design simple interface for the learning application.
Reference
U.S. Department of Health & Human Services. (2006). Research-Based Web Design & Usability Guidelines.
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