{"pk":28846,"title":"Shared Evidence: It all depends…","subtitle":null,"abstract":"When reasoning about evidence, we must carefully consider\nthe impact of different structures. For instance, if in the\nprocess of evaluating multiple reports, we find they rely on\nthe same, shared evidence, then the support proffered by\nthose reports is dependent on that evidence. Critically,\nnormative accounts suggest that such a dependency results in\nredundant information across reports (reducing evidential\nsupport), relative to reports based on distinct items of\nevidence. In the present work we disentangle the structural\nand observation-based indicators of this form of dependency.\nIn so doing, we present novel findings that lay reasoners are\nnot only insensitive to shared evidence structures when\nupdating their beliefs, but also that reasoners do not\nnecessarily prefer more diverse sources of evidence. Finally,\nwe replicate prior effects in reasoning under uncertainty,\nincluding conservative sequential updating, and difficulty in\nintegrating contradictory reports.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"evidential reasoning; probabilistic reasoning;\ndependence; Bayesian Networks; belief updating"}],"section":"Papers with Poster Presentations","is_remote":true,"remote_url":"https://escholarship.org/uc/item/5008d3h5","frozenauthors":[{"first_name":"Toby","middle_name":"D.","last_name":"Pilditch","name_suffix":"","institution":"University College London","department":""},{"first_name":"Ulrike","middle_name":"","last_name":"Hahn","name_suffix":"","institution":"University of Oxford","department":""},{"first_name":"David","middle_name":"","last_name":"Lagnado","name_suffix":"","institution":"University College London","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2019-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/28846/galley/18717/download/"}]}