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In order to better support older adults\u2019 health-related information seeking on the Internet, it is important to understand how they judge the credibility of such information when compared to younger users. We conducted two laboratory studies to explore how the credibility cues in message contents, website features, and user-generated comments differentially impact younger (19 to 26 years of age) and older adults\u2019 (58 to 80 years of age) credibility judgments. Results from the first experiment showed that older adults were less sensitive to the credibility cues in message contents and those in website features than younger adults. Verbal protocol analysis revealed that these differences could be caused by the higher tendency of older adults to passively accept web information, and their lack of deliberation on its quality and attention towards contextual web features (e.g., design look, source identity). In the second experiment, we studied how credibility cues from user reviews might differentially impact older and younger adults\u2019 credibility judgments of online health information. Results showed that consistent credibility cues in user reviews and message contents could facilitate older adults\u2019 credibility judgments. When the two were inconsistent, older adults, as compared to younger ones, were less swayed by highly appraising user reviews given to low credibility information. These results provided important implications for designing health information technologies that better fit the older population.<\/jats:p>","DOI":"10.1145\/2534410","type":"journal-article","created":{"date-parts":[[2014,3,4]],"date-time":"2014-03-04T13:24:59Z","timestamp":1393939499000},"page":"1-23","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":55,"title":["Age differences in credibility judgments of online health information"],"prefix":"10.1145","volume":"21","author":[{"given":"Q. Vera","family":"Liao","sequence":"first","affiliation":[{"name":"University of Illinois at Urbana-Champaign, North Goodwin AvenueUrbana, IL"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wai-Tat","family":"Fu","sequence":"additional","affiliation":[{"name":"University of Illinois at Urbana-Champaign, North Goodwin AvenueUrbana, IL"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2014,2]]},"reference":[{"key":"e_1_2_1_1_1","volume-title":"Proc. 23rd British HCI Group Annual Conference on People and Computers. 512--519","author":"Alsudani F.","unstructured":"F. Alsudani and M. Casey . 2009. The Effect of Aesthetics on Web Credibility . In Proc. 23rd British HCI Group Annual Conference on People and Computers. 512--519 . F. Alsudani and M. Casey. 2009. The Effect of Aesthetics on Web Credibility. 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