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Budescu, David V. Davis, James H. Rantilla, Adrian Kramer 2015-09-25T20:40:19Z 2015-09-25T20:40:19Z 10000-01-01 2000 2000 This paper examined individual and group level layperson decision making when information from multiple experts is available. A total of 767 participants read four scenarios with various forms of expert advice, and then made decisions and gave confidence ratings. As expert advice format became more precise (ambiguous statements to numerical probabilities), individuals and groups tended to make more nearly optimal decisions, with higher consensus across decision makers. However, decision confidence and satisfaction peaked when expert advice was in a verbal form, which was not the most precise form. In a surprising contrast to most group research, group level confidence ratings did not differ significantly from those of individual decision makers, nor did groups make substantially better decisions. Implications of these results for selection of expert advisor presentation format are discussed. Made available in DSpace on 2015-09-25T20:40:19Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9990120.pdf: 5661480 bytes, checksum: 298ef25afd5370a84ab65990119f2568 (MD5) Previous issue date: 2000 Embargo set by: Seth Robbins for item 83605 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 141 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000. http://hdl.handle.net/2142/82324 (MiAaPQ)AAI9990120 eng Psychology, Cognitive The Role of Expert Advice Formation Individual and Group Decision Making text Psychology Psychology University of Illinois at Urbana-Champaign Dissertation Ph.D.