In this article, we address the history of Nordic media research through a case study of the formation of media research in Sweden in the 1950s and 1960s and the role that The Board for Psychological Defence played in the formation of Swedish academic media re-search during the Cold War era. Based on archival research, we find that the impact of the psychological defence on Swedish media research was mainly concentrated to one Swedish university, and that the impact on the theoretical and methodological development of the discipline has been rather limited. This distinguishes the Swedish case from what has been argued in historical research on the development of media and communication research in the US.