The up-right/down-left advantage occurs for both participant- and computer-paced conditions: An empirical observation on Adam, Boon, Paas, and Umilta(1998)

When up and down stimuli are mapped to left and right keypresses or "left" and "right" vocalizations in a 2-choice reaction task, performance is often better with the up-right/down-left mapping than with the opposite mapping. J. J. Adam. B. Boon, F. G. W. C. Pails, and C. Umilta (1998) presented evi dence that the up-right/down-left advantage is obtained when trials are par ticipant paced but not when they are computer paced. In all, 3 experiments are reported that show no difference in magnitude of the up-right/down-left advantage between computer-paced and participant-paced conditions. The adv antage was eliminated, however, in Experiment 3 when a response deadline wa s imposed. Response speed, rather than participant or computer pacing of tr ials, is crucial.