While the concept of situation awareness have received a lot of attention over the past 15 years and many different measures have been developed and tested, the concepts of team situation awareness and shared situation awareness have not gotten as much attention and less progress has been made in developing a meaningful and validated measure. Thus, the purpose of this study is to operationalize the concept of shared situation awareness and test its consequences and relation to other concepts. In this study a new measure for shared situation awareness was developed and its potential evaluated. The measure was a shared priorities measure where the participants of the study each wrote down and rank ordered five factors they thought were important for good team performance in the situation. The factors were then scrambled and handed over to the other participant who once again ordered them according to priority. The correspondence between the two participants’ ratings was hypothesized to correlate with shared situation awareness. The results show that the shared priorities measure in this study did not relate to shared situation awareness. Several methodological concerns was identified which could have affected the results. The measure did relate to subjective ratings of cooperation which is very interesting and it is suggested that the measure captured aspects of teamwork. The shared priorities measure was easy to employ, required little preparation, has a high face-validity and is a promising addition to team research. / Under de senaste 15 åren har konceptet situationsmedvetande uppmärksammats en hel del, och många mått har utvecklats och blivit testade. Däremot har inte konceptet delat situationsmedvetande kommit lika långt i form av metodutveckling och validering. Syftet med denna rapport är att operationalisera begreppet delat situationsmedvetande och pröva det mot andra koncept. Inom ramen för detta arbete utvecklades ett nytt mått för delat situationsmedvetande som också testades empiriskt. Måttet mäter hur väl ett team har delade prioriteringar. Varje deltagare genererar fem faktorer för vad som är viktigt för god teamprestation i situationen och rangordnar dem i prioritetsordning. Dessa faktorer blandades sen om och delas ut till den andre teammedlemmen som i sin tur rangordnar faktorerna i prioritetsordning. Hur väl faktorernas rangordning korresponderar med varandra antogs vara ett mått på teamets delade situationsmedvetande. Resultatet visar att rangordningsmåttet inte har något samband med subjektivt bedömt delat situationsmedvetande. Flera metodologiska problem identifierades som kan ha påverkat resultatet. Däremot korrelerade rangordningsmåttet med hur väl samarbetet i teamet ansågs fungera, vilket tyder på att måttet fångar aspekter av hur teamet fungerar som team. Rangordningsmåttet var enkelt att använda, krävde lite förberedelse, har hög face-validity och verkar vara en möjlig väg att fortsätta studera team.