Joseph Sharit Mario A. Hernández Sara J. Czaja Peter Pirolli Investigating the Roles of Knowledge and Cognitive Abilities in Older Adult Information Seeking on the Web. 2008 15 ACM Trans. Comput.-Hum. Interact. 1 http://doi.acm.org/10.1145/1352782.1352785 db/journals/tochi/tochi15.html#SharitHCP08