Team Situation Awareness Scale (TSAS)

The Team Situation Awareness Scale (TSAS) extends individual situational awareness measurement to the team level, assessing how well team members collectively perceive the task environment, understand shared information, and coordinate their actions. Developed by Endsley, Salas, and collaborators in the 1990s–2000s, the TSAS measures team-level SA, recognizing that in complex operations (emergency response, military command, operating rooms), task success depends not just on individual operator awareness but on shared mental models, communication, and coordinated decision-making.