Abstract
Even though stimulus location is task irrelevant, reaction times are faster when the location of the stimulus corresponds with the location of the response than when it does not. This phenomenon is called the Simon effect. Most accounts of the Simon effect are based on the assumption that it arises from a conflict between the spatial code of the stimulus and that of the response. In this paper a computational model of this hypothesis is presented. It provides a computationally explicit mechanism of the Simon effect. Consistent with human performance, the model provides reaction times that indicate both an advantage for the ipsilateral, corresponding response (i.e., facilitation) and a disadvantage of the contralateral, noncorresponding response (i.e., inhibition). In addition, the model accounts for the fact that the size for the effect depends on task difficulty.
| Original language | English |
|---|---|
| Pages (from-to) | 193-205 |
| Number of pages | 13 |
| Journal | Psychological Research |
| Volume | 58 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Dec 1995 |
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ASJC Scopus subject areas
- Experimental and Cognitive Psychology
- Psychology(all)
Cite this
A computational model of the Simon effect. / Zorzi, Marco; Umiltá, Carlo.
In: Psychological Research, Vol. 58, No. 3, 12.1995, p. 193-205.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A computational model of the Simon effect
AU - Zorzi, Marco
AU - Umiltá, Carlo
PY - 1995/12
Y1 - 1995/12
N2 - Even though stimulus location is task irrelevant, reaction times are faster when the location of the stimulus corresponds with the location of the response than when it does not. This phenomenon is called the Simon effect. Most accounts of the Simon effect are based on the assumption that it arises from a conflict between the spatial code of the stimulus and that of the response. In this paper a computational model of this hypothesis is presented. It provides a computationally explicit mechanism of the Simon effect. Consistent with human performance, the model provides reaction times that indicate both an advantage for the ipsilateral, corresponding response (i.e., facilitation) and a disadvantage of the contralateral, noncorresponding response (i.e., inhibition). In addition, the model accounts for the fact that the size for the effect depends on task difficulty.
AB - Even though stimulus location is task irrelevant, reaction times are faster when the location of the stimulus corresponds with the location of the response than when it does not. This phenomenon is called the Simon effect. Most accounts of the Simon effect are based on the assumption that it arises from a conflict between the spatial code of the stimulus and that of the response. In this paper a computational model of this hypothesis is presented. It provides a computationally explicit mechanism of the Simon effect. Consistent with human performance, the model provides reaction times that indicate both an advantage for the ipsilateral, corresponding response (i.e., facilitation) and a disadvantage of the contralateral, noncorresponding response (i.e., inhibition). In addition, the model accounts for the fact that the size for the effect depends on task difficulty.
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UR - http://www.scopus.com/inward/citedby.url?scp=0029445347&partnerID=8YFLogxK
U2 - 10.1007/BF00419634
DO - 10.1007/BF00419634
M3 - Article
C2 - 8570787
AN - SCOPUS:0029445347
VL - 58
SP - 193
EP - 205
JO - Psychological Research
JF - Psychological Research
SN - 0340-0727
IS - 3
ER -