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Dynamic aspects of stimulus-response correspondence: Evidence for two mechanisms involved in the Simon effect

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Wiegand,  Katrin
Department Psychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Wascher,  Edmund
Max Planck Research Group Cognitive Psychophysiology of Action, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Wiegand, K., & Wascher, E. (2005). Dynamic aspects of stimulus-response correspondence: Evidence for two mechanisms involved in the Simon effect. Journal of Experimental Psychology: Human Perception and Performance, 31(3), 453-464. doi:10.1037/0096-1523.31.3.453.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-AD67-C
Abstract
It has been recently proposed that the time course of the Simon effect may vary across tasks, which might reflect different types of stimulus-response (S-R) transmissions (E. Wascher, U. Schatz, T. Kuder, & R. Verleger, 2001). The authors tested this notion in 4 experiments by comparing Simon effects evoked by horizontal and vertical S-R arrangements. The temporal properties of the effect, as well as lateralized readiness potential-difference waves, indicated a fast and transient influence of the horizontal, but a slow and sustained influence of the vertical spatial stimulus feature on performance. Additional evidence for this temporal dissociation was obtained in experiments that induced a shortening or lengthening of the mean response time. Thus, the data strongly indicate that there are 2 temporally dissociable mechanisms involved in generating the Simon effect for horizontal and vertical S-R relations.