TY - JOUR
T1 - The Impact of Stimulus and Response Variability on S-R Correspondence Effects
AU - Wühr, Peter
AU - Biebl, Rupert
AU - Ansorge, Ulrich
PY - 2008/5/1
Y1 - 2008/5/1
N2 - 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.
AB - 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.
KW - response variability
KW - S-R correspondence
KW - Simon effect
KW - stimulus variability
KW - working memory
UR - http://www.scopus.com/inward/record.url?scp=43549086879&partnerID=8YFLogxK
U2 - 10.1037/0278-7393.34.3.533
DO - 10.1037/0278-7393.34.3.533
M3 - Article
C2 - 18444754
AN - SCOPUS:43549086879
VL - 34
SP - 533
EP - 545
JO - Journal of Experimental Psychology: Learning, Memory, and Cognition
JF - Journal of Experimental Psychology: Learning, Memory, and Cognition
SN - 0278-7393
IS - 3
ER -