Horse-race model simulations of the stop-signal procedure.
In the stop-signal paradigm, subjects perform a standard two-choice reaction task in which, occasionally and unpredictably, a stop-signal is presented requiring the inhibition of the response to the choice signal. The stop-signal paradigm has been successfully applied to assess the ability to inhibit under a wide range of experimental conditions and in various populations. The current study presents a set of evidence-based guidelines for using the stop-signal paradigm. The evidence was derived from a series of simulations aimed at (a) examining the effects of experimental design features on inhibition indices, and (b) testing the assumptions of the horse-race model that underlies the stop-signal paradigm. The simulations indicate that, under most conditions, the latency, but not variability, of response inhibition can be reliably estimated.
Band
Guido P H
GP
Department of Psychology, Faculty of Psychology, Leiden University, PO Box 9555, 2300 RB Leiden, The Netherlands. band@fsw.leidenuniv.nl
van der Molen
Maurits W
MW
Logan
Gordon D
GD
D000818:Animals; D002755:Choice Behavior; D003163:Competitive Behavior; D006736:Horses; D006801:Humans; D007266:Inhibition, Psychological; D009010:Monte Carlo Method; D009048:Motor Skills; D011930:Reaction Time; D014796:Visual Perception