Debriefing
Look at the typical results from spatial cueing experiments employing exogenous (in black) and endogenous (in yellow) cues. The most important finding is that response times are faster in valid cue conditions than in invalid cue conditions. These results suggest that participants do shift attention when the cue is presented, and that shift in attention makes responding to the target easier and faster. Response times on neutral trials fall between the valid and invalid cue conditions.