{"pk":25737,"title":"The role of conflict in the n-2 repetition cost in task switching:\na computational model","subtitle":null,"abstract":"In task switching, the n-2 repetition cost (informally, the elevation\nin RT associated with performing a recently abandoned\ntask) is an indicator of residual task-set inhibition. One suggestion\nis that such inhibition is triggered by conflict between\ntask-set elements. We present a novel computational model\ninstantiating this proposal, by adding task-conflict monitoring\nunits to an existing, interactive activation model of task switching.\nThe model produces the empirical pattern, n-1 switch\ncosts and n-2 repetition costs, as an intrinsic property of its\narchitecture, but dependent on the inhibition of task demand\nunits by the conflict detection mechanism. In a further simulation,\nwe make predictions about n-2 repetition costs for asymmetric\ntasks, and show that one functional benefit of such a\nconflict-based, task inhibition mechanism is to facilitate topdown\ncontrol of tasks by automatically reducing cross-task interference","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"backward inhibition; conflict monitoring; interactive\nactivation model; task inhibition; task switching"}],"section":"Papers","is_remote":true,"remote_url":"https://escholarship.org/uc/item/891852r7","frozenauthors":[{"first_name":"Nicholas","middle_name":"J","last_name":"Sexton","name_suffix":"","institution":"University of London","department":""},{"first_name":"Richard","middle_name":"P","last_name":"Cooper","name_suffix":"","institution":"University of London","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2015-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/25737/galley/15361/download/"}]}