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Research article summary:
The influence of irrelevant stimulus changes on stimulus and response repetition effects.
Abstract Extract:
In this study the influence of irrelevant stimulus changes from one trial to another in a serial reaction time task was investigated. Two experiments were performed in which subjects were required to respond to stimulus colour. Four colours were mapped ... (Full abstract text below) Published 2003Feb
in Journal: Acta Psychol (Amst)
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Acta Psychol (Amst).
2003 Feb;112(2):143-56
The influence of irrelevant stimulus changes on stimulus and response repetition effects.
Notebaert W, Soetens E
Cognitive and Physiological Psychology, Vrije Universiteit Brussel, University of Brussels, Pleinlaan 2, 1050, Brussels, Belgium. wim.notebaert@vub.ac.be
In this study the influence of irrelevant stimulus changes from one trial to another in a serial reaction time task was investigated. Two experiments were performed in which subjects were required to respond to stimulus colour. Four colours were mapped on two response keys, so that colour and response repetition effects could be dissociated. In Experiment 1, the irrelevant stimulus dimension was location and in Experiment 2 it was shape. Both experiments were performed with a short and a long response-stimulus interval (RSI)-condition. In both experiments, the irrelevant dimension influenced the response repetition effect but not the colour repetition effect. In the reaction times, a response alternation effect was observed only when the irrelevant location of the stimulus changed in the long RSI-condition. The error rates showed a response alternation benefit for both irrelevant dimensions, in the short and the long RSI-condition. The benefit for response alternations is explained in terms of a response bias towards change that is triggered by a changing stimulus feature. We assume that the response bias is stronger for location than for colour and that accuracy is more sensitive to this bias than response latencies.
PMID : 12521664 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Wim | Notebaert | W |
| Eric | Soetens | E |
Affiliation: Cognitive and Physiological Psychology, Vrije Universiteit Brussel, University of Brussels, Pleinlaan 2, 1050, Brussels, Belgium. wim.notebaert@vub.ac.be
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