The use of the color red to denote stop and the color green to denote go was considered to be a pairing that was ecologically valid; participants are likely to have experienced this pairing on many occasions previously (for example at traffic lights or pedestrian crossings). Furthermore, the arrow was considered to be easily comprehensible encouragement to look in the direction indicated by arrowhead, and the cross, an obvious reminder that no eye movements were permitted. Previous research has demonstrated that arrow cues rapidly direct attention towards the direction in which the arrowhead is pointing (Hommel et al., 2001; Tipples, 2002; Butler and Zacks, 2006). Thus, the arrowhead cue pointing towards the opposite visual hemifield to the target location should reduce WM load relative to the standard AST condition, and greatly reduce WM load relative to the memory-guided AST condition. Importantly, the AST-go/no-go still posed an inhibitory load, since participants were required to inhibit the reflexively programmed prosaccade to the sudden-onset of the red distractor. The presentation order of screens in the AST-go/no-go condition is displayed in Figure 1 (right panel). The mean latencies and mean accuracy deviations of correct saccades, and mean proportion of directional errors were collated for each condition, per participant. Saccades were identified using algorithms applied by DataViewer (SR Research Ltd.,) and then visually inspected by the experimenter to ensure that all saccades were executed at least 80 ms after the appearance of the target stimuli in each condition, and exceeding 1° in amplitude. Latencies of less than 80 ms were deemed anticipatory errors, and such trials were excluded from the analysis. Latencies greater than 800 ms were discounted from the analysis on the grounds that they represented a lapse in concentration and not representative of saccadic performance in general. Visual inspection of the data files enabled trials in which the eye sample visibility was lost by the eye tracker (for example, trials in which the participant may have moved their head, or closed their eyes) to be identified and omitted from data analysis.