Example stimuli employed in Experiment 2.

Participants were required to detect target letters within digit distractors. SOA was either 30 msec, 60 msec, 90 msec or 120 msec. The location of T1 was jittered between serial positions 4, 5 and 6. Tfinal appeared at lag 3 or 8. Every trial contained at least two targets. A third target appeared on cued trials and was positioned directly before Tfinal. The term lag always described the number of positions between T1 and Tfinal. Targets are underlined in this table for ease of detection. Targets were not underlined in the actual task.