title: Influence of stimulus--response assignment on the joint-action correspondence effect.
abstract: Sebanz et al. (Cognition 88:B11-B21, 2003) have shown that spatial correspondence effects are observed even when the two-choice reaction time task is distributed between two people, such that each person is assigned only one of two possible stimulus-response (S-R) pairings. The effect is similar to when one person is assigned and responds to both S-R pairings. These results have been taken to suggest that two people performing a complementary task co-represent each other's response alternatives. In our experiment, we examined performance when paired participants responded to the same S-R alternative. We reasoned that co-representation would be of little advantage as the task alternatives would be the same for both participants. Correspondence effects were absent when paired participants responded to the same S-R alternative but emerged when they responded to different alternatives.
authors.affiliation: School of Human Kinetics, University of British Columbia, 210-6081 University Boulevard, Vancouver, BC, V6T 1Z1, Canada.
authors.forename: Melanie Y
authors.initials: MY
authors.lastname: Lam
authors.forename: Romeo
authors.initials: R
authors.lastname: Chua
mesh_terms: D000704:Analysis of Variance; D002755:Choice Behavior / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*