The document discusses attentional control and selective attention. It defines attentional control as the extent to which a performer can focus on relevant stimuli during an event. It discusses theories of selective attention, attentional narrowing, and cue utilization theory. It notes that cue utilization theory links arousal levels to an individual's ability to focus on relevant cues. Optimal arousal allows focusing on cues while over and under arousal cause underperformance.