{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/99309"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/99309","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Similarity and feature dimensions in inattentional blindness","abstract":"This Thesis was approved for publication on 2017-10-20 at 16:31.","abstract_html":"This Thesis was approved for publication on 2017-10-20 at 16:31.","abstract_has_math":false,"creators":["Wood, Katherine Miller"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Psychology","degree_department":null,"school":null,"contributors":["Simons, Daniel J."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-03-13T15:45:08Z","date_published":"2018-03-13T15:45:08Z","updated_at":"2026-07-22T22:24:37Z","subjects":["similarity","features","attention","inattentional blindness","attention sets"],"languages":["en"],"rights":["Copyright 2017 Katherine Wood"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/99309","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Simons, Daniel J."]},{"key":"dc:creator","label":"Author","values":["Wood, Katherine Miller"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018-03-13T15:45:08Z","2017-10-20","2017-12"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Psychology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["similarity","features","attention","inattentional blindness","attention sets"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Katherine Wood"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/99309"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This Thesis was approved for publication on 2017-10-20 at 16:31.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11695 on 2018-03-13 at 10:08:00","Made available in DSpace on 2018-03-13T15:45:08Z (GMT). No. of bitstreams: 2 WOOD-THESIS-2017.pdf: 1131753 bytes, checksum: eb4cdca4d8d3e0f05ae5d4f1b63ff271 (MD5) LICENSE.txt: 4211 bytes, checksum: 0064fcc4fa46ae2897327303981db604 (MD5) Previous issue date: 2017-10-20","Obvious but unexpected events often go unnoticed when people are selectively attending to one set of objects and ignoring another. People are more likely to notice something unexpected if it is more similar to the group of objects to which they are attending, and less similar to the group of objects that they are ignoring. Previous studies of this phenomenon often vary similarity along a single continuum, such as black to white, with the attended and ignored objects occupying either extreme. This results in similarity and dissimilarity that have a zero-sum relationship; as an object becomes more similar to one set of objects and moves closer to one end of the continuum, it necessarily becomes less similar from the other set of objects and moves farther from the other end of the continuum. This obscures the separate contributions of similarity to a set of objects and dissimilarity from a set of objects to the noticing of unexpected events. To disentangle these similarity roles, we designed a series of inattentional blindness tasks in which we held similarity to the attended set along a critical feature constant while varying it with respect only to the ignored set, or vice versa. Across five experiments, we varied similarity both along task-relevant dimensions and task-irrelevant dimensions. We consistently observed strong inhibitory effects for stimuli similar to the ignored set; however, this effect depended on whether similarity varied on a task-relevant or task-irrelevant dimension. We did not consistently observe enhancement of objects similar to the attended set. This suggests that suppression alone may explain many of the observed similarity effects, and reveals that these similarity effects do not extend cleanly to task-irrelevant dimensions.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo terms","The student, Katherine Wood, accepted the attached license on 2017-10-20 at 11:39.","The student, Katherine Wood, submitted this Thesis for approval on 2017-10-20 at 11:59."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Similarity and feature dimensions in inattentional blindness"]}]}],"canonical_facts":{"dc:contributor":["Simons, Daniel J."],"dc:creator":["Wood, Katherine Miller"],"dc:date":["2018-03-13T15:45:08Z","2017-10-20","2017-12"],"dc:description":["This Thesis was approved for publication on 2017-10-20 at 16:31.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11695 on 2018-03-13 at 10:08:00","Made available in DSpace on 2018-03-13T15:45:08Z (GMT). No. of bitstreams: 2 WOOD-THESIS-2017.pdf: 1131753 bytes, checksum: eb4cdca4d8d3e0f05ae5d4f1b63ff271 (MD5) LICENSE.txt: 4211 bytes, checksum: 0064fcc4fa46ae2897327303981db604 (MD5) Previous issue date: 2017-10-20","Obvious but unexpected events often go unnoticed when people are selectively attending to one set of objects and ignoring another. People are more likely to notice something unexpected if it is more similar to the group of objects to which they are attending, and less similar to the group of objects that they are ignoring. Previous studies of this phenomenon often vary similarity along a single continuum, such as black to white, with the attended and ignored objects occupying either extreme. This results in similarity and dissimilarity that have a zero-sum relationship; as an object becomes more similar to one set of objects and moves closer to one end of the continuum, it necessarily becomes less similar from the other set of objects and moves farther from the other end of the continuum. This obscures the separate contributions of similarity to a set of objects and dissimilarity from a set of objects to the noticing of unexpected events. To disentangle these similarity roles, we designed a series of inattentional blindness tasks in which we held similarity to the attended set along a critical feature constant while varying it with respect only to the ignored set, or vice versa. Across five experiments, we varied similarity both along task-relevant dimensions and task-irrelevant dimensions. We consistently observed strong inhibitory effects for stimuli similar to the ignored set; however, this effect depended on whether similarity varied on a task-relevant or task-irrelevant dimension. We did not consistently observe enhancement of objects similar to the attended set. This suggests that suppression alone may explain many of the observed similarity effects, and reveals that these similarity effects do not extend cleanly to task-irrelevant dimensions.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo terms","The student, Katherine Wood, accepted the attached license on 2017-10-20 at 11:39.","The student, Katherine Wood, submitted this Thesis for approval on 2017-10-20 at 11:59."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/99309"],"dc:language":["en"],"dc:rights":["Copyright 2017 Katherine Wood"],"dc:subject":["similarity","features","attention","inattentional blindness","attention sets"],"dc:title":["Similarity and feature dimensions in inattentional blindness"],"dc:type":["text"],"thesis:degree_discipline":["Psychology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:37Z"}