Document Detail

A feature-integration account of sequential effects in the Simon task.
MedLine Citation:
PMID:  14752663     Owner:  NLM     Status:  MEDLINE    
Recent studies have shown that the effects of irrelevant spatial stimulus-response (S-R) correspondence (i.e., the Simon effect) occur only after trials in which the stimulus and response locations corresponded. This has been attributed to the gating of irrelevant information or the suppression of an automatic S-R route after experiencing a noncorresponding trial-a challenge to the widespread assumption of direct, intentionally unmediated links between spatial stimulus and response codes. However, trial sequences in a Simon task are likely to produce effects of stimulus- and response-feature integration that may mimic the sequential dependencies of Simon effects. Four experiments confirmed that Simon effects are eliminated if the preceding trial involved a noncorresponding S-R pair. However, this was true even when the preceding response did not depend on the preceding stimulus or if the preceding trial required no response at all. These findings rule out gating/suppression accounts that attribute sequential dependencies to response selection difficulties. Moreover, they are consistent with a feature-integration approach and demonstrate that accounting for the sequential dependencies of Simon effects does not require the assumption of information gating or response suppression.
Bernhard Hommel; Robert W Proctor; Kim-Phuong L Vu
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Publication Detail:
Type:  Journal Article     Date:  2003-05-06
Journal Detail:
Title:  Psychological research     Volume:  68     ISSN:  0340-0727     ISO Abbreviation:  Psychol Res     Publication Date:  2004 Feb 
Date Detail:
Created Date:  2004-01-30     Completed Date:  2004-07-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0435062     Medline TA:  Psychol Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1-17     Citation Subset:  IM    
Cognitive Psychology Unit, Leiden University, Postbus 9555, 2300, RB Leiden, The Netherlands.
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MeSH Terms
Functional Laterality*
Inhibition (Psychology)
Memory, Short-Term
Pattern Recognition, Visual*
Psychomotor Performance*
Reaction Time

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