{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/82324"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/82324","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The Role of Expert Advice Formation Individual and Group Decision Making","abstract":"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.","abstract_html":"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.","abstract_has_math":false,"creators":["Rantilla, Adrian Kramer"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Psychology","degree_department":null,"school":null,"contributors":["Budescu, David V.","Davis, James H."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T20:40:19Z","date_published":"2015-09-25T20:40:19Z","updated_at":"2026-07-22T22:26:18Z","subjects":["Psychology, Cognitive"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI9990120"],"render_values":[{"text":"(MiAaPQ)AAI9990120","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/82324","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Budescu, David V.","Davis, James H."]},{"key":"dc:creator","label":"Author","values":["Rantilla, Adrian Kramer"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T20:40:19Z","10000-01-01","2000"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Psychology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Psychology, Cognitive"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/82324","(MiAaPQ)AAI9990120"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This paper examined individual and group level layperson decision making when information from multiple experts is available. 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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). 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