Dipl.-Soz. Hermann-Dieter Schröder studied sociology in Bielefeld. He worked at the Hans-Bredow-Institut from 1983 to 2022 where he pursued the following topics, among others: the presentation of television programmes and broadcasting providers in programme guides and the daily newspapers, the organisation and financing of local radio, the organisation of programme production for television and the development of media business in Hamburg. His research interests concerned particularly the organisatorial and commercial structures of the media system.