This paper describes an experimental evaluation of techniques to assess situational awareness (SA) in teams. Three attributes of SA in teams are assessed: team SA, shared SA and team metacognition. We propose techniques for deriving these measures from a method that combines true/false SA probes with self-ratings of perceived SA and ratings of other team members’ SA. To illustrate the techniques, their application to a militarised team-based version of the game of chess is described and the results for team SA, shared SA and team metacognition are presented.