Albarran, AlanAlanAlbarranMierzejewska, Bozena IzabelaBozena IzabelaMierzejewska2023-04-132023-04-132004-05-12https://www.alexandria.unisg.ch/handle/20.500.14171/67788This paper analyzes how concentration of media markets is measured in the United States and the major European nations. Theoretical and methodological aspects of measuring concentration are introduced, along with data that illustrates the United States media markets are becoming increasingly consolidated across industries. Efforts to measure concentration in the European Union are also discussed. Problems in measuring concentration are detailed, with the authors calling for common approaches and better sources of data to facilitate scholarly research on concentration, especially needed for cross-cultural studies.enconference paper