Figure 7. RTs associated with a frequent target as a function of the pattern
of targets appearing on the 4 just-preceding trials. For the value 0 there
was no infrequent target in that set. For the value 1, the single infrequent
target appeared in the first (most distant) position; when it was 4 it
appeared on the trial just preceding the measured RT. The differences among
these RTs were not significant, and there was no evidence for carry-over
effects of just seen stimuli.
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