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We have found, however, that older adults are equally if not more interested in the activities of younger family members. The major obstacle preventing them from participating in information sharing is the technology itself. Therefore, we developed a multi-layered interface approach that offers simple interaction to older users. In our system, users can choose to enter information into a computerized calendar or write it by hand on digital paper calendars. All of the information is automatically shared among everyone in the distributed family. By making the interface more accessible to older users, we promote symmetrical sharing of information among both older and younger family members. We present our participatory design process, describe the user interface, and report on an exploratory field study in three households of an extended family.<\/jats:p>","DOI":"10.1145\/1183456.1183458","type":"journal-article","created":{"date-parts":[[2007,1,16]],"date-time":"2007-01-16T19:38:29Z","timestamp":1168976309000},"page":"313-346","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":95,"title":["Shared family calendars"],"prefix":"10.1145","volume":"13","author":[{"given":"Catherine","family":"Plaisant","sequence":"first","affiliation":[{"name":"University of Maryland, College Park, MD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aaron","family":"Clamage","sequence":"additional","affiliation":[{"name":"University of Maryland, College Park, MD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hilary Browne","family":"Hutchinson","sequence":"additional","affiliation":[{"name":"University of Maryland, College Park, MD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin B.","family":"Bederson","sequence":"additional","affiliation":[{"name":"University of Maryland, College Park, MD"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Allison","family":"Druin","sequence":"additional","affiliation":[{"name":"University of Maryland, College Park, MD"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2006,9]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"AIRSET www.airset.com.]] AIRSET www.airset.com.]]"},{"key":"e_1_2_1_2_1","volume-title":"Proceedings of Human Factors in Computing Systems. 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