Numbers and space: a computational model of the SNARC effect.
The SNARC (spatial numerical associations of response codes) effect reflects the tendency to respond faster with the left hand to relatively small numbers and with the right hand to relatively large numbers (S. Dehaene, S. Bossini, & P. Giraux, 1993). Using computational modeling, the present article aims to provide a framework for conceptualizing the SNARC effect. In line with models of spatial stimulus-response congruency, the authors modeled the SNARC effect as the result of parallel activation of preexisting links between magnitude and spatial representation and short-term links created on the basis of task instructions. This basic dual-route model simulated all characteristics associated with the SNARC effect. In addition, 2 experiments tested and confirmed new predictions derived from the model.
Gevers
Wim
W
Department of Experimental Psychology, Ghent University, Ghent, Belgium. wim.gevers@ugent.be
Verguts
Tom
T
Reynvoet
Bert
B
Caessens
Bernie
B
Fias
Wim
W
D000328:Adult; D001245:Association Learning; D003196:Computer Graphics; D003220:Conflict, Psychological; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007266:Inhibition, Psychological; D007600:Judgment; D008297:Male; D008570:Memory, Short-Term; D008962:Models, Theoretical; D016571:Neural Networks, Computer; D017711:Nonlinear Dynamics; D010364:Pattern Recognition, Visual; D011340:Problem Solving; D011597:Psychomotor Performance; D011930:Reaction Time; D012044:Regression Analysis