Performance-based and physiological measures of situational awareness

Several situational awareness (SA) and workload measurement techniques were investigated in simulated air-to-ground missions. These techniques included measures of effectiveness, subjective ratings, performance measures, and physiological measures. The results demonstrated strengths and weaknesses in all of these techniques. Measures of effectiveness and subjective ratings suggested that the experimental manipulations were effective in altering SA. The performance measures produced mixed results. Physiological measures detected some intriguing effects in the EEG. Overall, the complexity of the relationship between SA and workload encourages the use of multiple tools in any SA evaluation.