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ABSTRACT: The so-called Simon effect can be determined (a) by a natural tendency to respond towards the source of stimulation, or (b) by a comparison between the encoding of the position of the stimulus and the encoding of the position of the effectors producing the response. Twelve subjects performed a manual choice between two visual stimuli in the same visual hemifield. The results of the experiment supported hypothesis (b).
Bollettino della Società italiana di biologia sperimentale 12/1983; 59(11):1693-7.
