First, we conducted a one-way ANOVA on the PST data to determine whether the groups were comparable in the baseline, control task, where there was no IC or WM load. The mean latencies and spatial accuracy for the PST baseline task were comparable in the older group (mean latency = 171 ms, SD = 43; mean spatial accuracy = 0.66°, SD = 0.27) and younger group (mean latency = 154 ms, SD = 25.1; mean spatial accuracy = 0.57°, SD = 0.14). The ANOVA revealed that there was no effect of age group on prosaccade latencies [F(1,30) = 1.76, p = 0.195] or spatial accuracy [F(1,30) = 1.324, p = 0.259]. This confirms that there was no general decline in motor processing speed or spatial accuracy with age.