{"pk":26249,"title":"Geometric representations of evidence in models of decision-making","subtitle":null,"abstract":"Traditionally, models of the decision-making process have fo-cused on the case where a decision-maker must choose be-tween two alternatives. The most successful of these, sequen-tial sampling models, have been extended from the binary caseto account for choices and response times between multiplealternatives. In this paper, I present a geometric representa-tion of diffusion and accumulator models of multiple-choicedecisions, and show how these can be analyzed as Markovprocesses on lattices. I then introduce psychological relation-ships between choice alternatives and show how this impactsthe sequential sampling process. I conclude with two examplesshowing how one can predict distributions of responses on acontinuum as well as response times by incorporating psycho-logical representations into a multi-dimensional random walkdiffusion process.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"random walk; decision making; evidence accumu-lation; multi-alternative; continuous response"}],"section":"Papers","is_remote":true,"remote_url":"https://escholarship.org/uc/item/01z86463","frozenauthors":[{"first_name":"Peter","middle_name":"D.","last_name":"Kvam","name_suffix":"","institution":"Michigan State University","department":""},{"first_name":"Luis","middle_name":"H.","last_name":"Favela","name_suffix":"","institution":"University of Central Florida","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2016-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/26249/galley/15885/download/"}]}