Journal article
Effects of saccades and response type on the Simon effect: if you look at the stimulus, the Simon effect may be gone.
- 2010-06-08
Published in:
- Quarterly journal of experimental psychology (2006). - 2010
Adult
Analysis of Variance
Attention
Female
Fixation, Ocular
Humans
Male
Photic Stimulation
Reaction Time
Saccades
Students
Task Performance and Analysis
Visual Perception
Young Adult
English
The Simon effect has most often been investigated with key-press responses and eye fixation. In the present study, we asked how the type of eye movement and the type of manual response affect response selection in a Simon task. We investigated three eye movement instructions (spontaneous, saccade, and fixation) while participants performed goal-directed (i.e., reaching) or symbolic (i.e., finger-lift) responses. Initially, no oculomotor constraints were imposed, and a Simon effect was present for both response types. Next, eye movements were constrained. Participants had to either make a saccade toward the stimulus or maintain gaze fixed in the screen centre. While a congruency effect was always observed in reaching responses, it disappeared in finger-lift responses. We suggest that the redirection of saccades from the stimulus to the correct response location in noncorresponding trials contributes to the Simon effect. Because of eye-hand coupling, this occurred in a mandatory manner with reaching responses but not with finger-lift responses. Thus, the Simon effect with key-presses disappears when participants do what they typically do--look at the stimulus.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1080/17470211003802434
- PMID 20526979
- Persistent URL
- https://sonar.ch/global/documents/149764
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