The impact of stimulus and response variability on S-R correspondence effects

Autor(en): Wuehr, Peter
Biebl, Rupert
Ansorge, Ulrich 
Stichwörter: ATTENTION; COMPATIBILITY; DIMENSIONAL OVERLAP; DISCRIMINATION ACCOUNT; INFORMATION; IRRELEVANT; MODEL; Psychology; Psychology, Experimental; response variability; S-R correspondence; SIMON; Simon effect; SPATIAL STIMULUS; stimulus variability; TASK; working memory
Erscheinungsdatum: 2008
Herausgeber: AMER PSYCHOLOGICAL ASSOC
Journal: JOURNAL OF EXPERIMENTAL PSYCHOLOGY-LEARNING MEMORY AND COGNITION
Volumen: 34
Ausgabe: 3
Startseite: 533
Seitenende: 545
Zusammenfassung: 
Six experiments investigated how variability on irrelevant stimulus dimensions and variability on response dimensions contribute to spatial and nonspatial stimulus-response (S-R) correspondence effects. Experiments 1-3 showed that, when stimuli varied in location and number, S-R correspondence effects for location or numerosity occurred when responses varied on these dimensions but not when responses were invariant on these dimensions. These results are consistent with the response-discrimination account, according to which S-R correspondence effects should only arise for a dimension that is used for discriminating between responses in working memory. Experiments 4-6 showed that, when responses varied in location and number, both invariant and variable stimulus number produced correspondence effects in S-R numerosity. In summary, the present results indicate that the usefulness of a particular dimension for response discrimination can be sufficient for producing S-R correspondence effects, whereas variability of a stimulus dimension is not sufficient for producing such effects.
ISSN: 02787393
DOI: 10.1037/0278-7393.34.3.533

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