Similarity, Not Complexity, Determines Visual Working Memory Performance.
A number of studies have shown that visual working memory (WM) is poorer for complex versus simple items, traditionally accounted for by higher information load placing greater demands on encoding and storage capacity limits. Other research suggests that it may not be complexity that determines WM p...
| Published in: | Journal of Experimental Psychology. Learning, Memory & Cognition Vol. 41; no. 6; pp. 1884 - 1893 |
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| Main Authors: | , , , , |
| Format: | Article |
| Published: |
American Psychological Association
Nov2015
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=110750875&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 110750875 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 02787393 EXL jtl: Journal of Experimental Psychology. Learning, Memory & Cognition issn: 02787393 maglogo: N pubinfo: dt: Nov2015 vid: 41 iid: 6 pid: 34 pub: American Psychological Association artinfo: ui: 110750875 10.1037/xlm0000125 ppf: 1884 ppct: 9 formats: tig: atl: Similarity, Not Complexity, Determines Visual Working Memory Performance. aug: au: Jackson, Margaret C. Linden, David E. J. Roberts, Mark V. Kriegeskorte, Nikolaus Haenschel, Corinna affil: University of Aberdeen Cardiff University Bangor University University of Cambridge City University London su: Memory loss Short-term memory Biocomplexity Similarity (Psychology) Memory disorders sug: subj: Memory loss Short-term memory Biocomplexity Similarity (Psychology) Memory disorders keyword: capacity models complexity similarity visual search working memory capacity models complexity similarity visual search working memory ab: A number of studies have shown that visual working memory (WM) is poorer for complex versus simple items, traditionally accounted for by higher information load placing greater demands on encoding and storage capacity limits. Other research suggests that it may not be complexity that determines WM performance per se, but rather increased perceptual similarity between complex items as a result of a large amount of overlapping information. Increased similarity is thought to lead to greater comparison errors between items encoded into WM and the test item(s) presented at retrieval. However, previous studies have used different object categories to manipulate complexity and similarity, raising questions as to whether these effects are simply due to cross-category differences. For the first time, here the relationship between complexity and similarity in WM using the same stimulus category (abstract polygons) are investigated. The authors used a delayed discrimination task to measure WM for 1-4 complex versus simple simultaneously presented items and manipulated the similarity between the single test item at retrieval and the sample items at encoding. WM was poorer for complex than simple items only when the test item was similar to 1 of the encoding items, and not when it was dissimilar or identical. The results provide clear support for reinterpretation of the complexity effect in WM as a similarity effect and highlight the importance of the retrieval stage in governing WM performance. The authors discuss how these findings can be reconciled with current models of WM capacity limits. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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