{"pk":50383,"title":"The Decision Environment and Confidence in Experiential Risky Choice","subtitle":null,"abstract":"We investigated how the decision environment influences choice and confidence in a binary decisions-from-experience (DfE) task. We manipulated four aspects of the decision environment: option composition (safe vs. risky; SR, or risky vs. risky; RR), the riskiness of the EV-maximizing choice, feedback type (partial or full), and problem order (SR before or after RR). We found that participants made more EV-maximizing choices and were more confident in SR environments and when the EV-maximizing choice was the safer option. Participants' behavior was influenced by their understanding of the payoff structure: confidence dropped sharply after discovering a previously unexpected outcome, and experiencing RR first led to over-sampling and reduced rewards in later SR environments. A computational model incorporating choice and reward history provided a unifying explanation for these patterns. Our results shed light on how decision environment features interact to shape sampling biases, subsequently altering learning and decision-making outcomes.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"Decision making; Learning"}],"section":"Member Abstracts with Poster Presentation","is_remote":true,"remote_url":"https://escholarship.org/uc/item/87r546p2","frozenauthors":[{"first_name":"Kuang-Heng","middle_name":"","last_name":"Li","name_suffix":"","institution":"University of Warwick","department":""},{"first_name":"Prisca S.","middle_name":"","last_name":"Han","name_suffix":"","institution":"University of Warwick","department":""},{"first_name":"Wenjia Joyce","middle_name":"","last_name":"Zhao","name_suffix":"","institution":"University of Warwick","department":""},{"first_name":"Emmanouil","middle_name":"","last_name":"Konstantinidis","name_suffix":"","institution":"University of Warwick","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2025-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/50383/galley/38345/download/"}]}