{"pk":26880,"title":"Computational and behavioral investigations of the SOB-CS removal mechanismin working memory","subtitle":null,"abstract":"SOB-CS is an interference-based computational model ofworking memory that explains findings from simple and com-plex span experiments. According to the model’s mechanismof interference by superposition, high similarity between mem-ory items and subsequently processed distractors is beneficialbecause the more a distractor is similar to an item, the morethey share similar units, leading to less distortion of the mem-ory item. When time allows, SOB-CS removes interfering dis-tractors from memory by unbinding them from their context.The combination of these two mechanisms leads to the predic-tion that when free time is long enough to remove the distrac-tors entirely, similarity between items and distractors shouldno longer be beneficial to memory performance. The aim ofthe present study was to test this prediction. Adult participantsperformed a complex-span task in which the free time follow-ing each distractor and the similarity between items and dis-tractors were varied. As predicted by the model, we observeda positive effect of the similarity between items and distrac-tors, and a negative effect of pace on the mean working mem-ory performance. However, we did not observe the predictedinteraction. An analysis of the errors produced during recallshowed that longer free time reduced the tendency of distrac-tors to intrude in recall much less than the model predicted.The SOB-CS model accounted well for the data after a sub-stantial reduction of the removal-rate parameter.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"working memory"},{"word":"SOB-CS model; interferenceby superposition; removal mechanism"}],"section":"Talks: Papers","is_remote":true,"remote_url":"https://escholarship.org/uc/item/3d32v5wc","frozenauthors":[{"first_name":"Violette","middle_name":"","last_name":"Hoareau","name_suffix":"","institution":"University Grenoble Alpes,","department":""},{"first_name":"Sophie","middle_name":"","last_name":"Portrat","name_suffix":"","institution":"University Grenoble Alpes,","department":""},{"first_name":"Klaus","middle_name":"","last_name":"Oberauer","name_suffix":"","institution":"University of Zurich","department":""},{"first_name":"Benoˆıt","middle_name":"","last_name":"Lemaire","name_suffix":"","institution":"University Grenoble Alpes,","department":""},{"first_name":"Ga ̈en","middle_name":"","last_name":"Plancher","name_suffix":"","institution":"Universit ́e Lumi`ere Lyon","department":""},{"first_name":"Stephan","middle_name":"","last_name":"Lewandowsky","name_suffix":"","institution":"University of Bristol and University of Western Australia","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2017-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/26880/galley/16516/download/"}]}