I am a church historian with particular interest in how church and society affect each other. This is especially interesting at a time when religion in new ways has become appreciated as a factor of explanation in terms of social change. My dissertation focused upon how the Swedish Social Democracy in the early 1900's became a national movement, and how and why this social democratic movement also included the Swedish Church as a national church  for a modern nation, from being very critical to the church of the past. In a later project, I have analyzed the so-called pietism and its breakthrough in Sweden in the late 1600s. In a new interdisciplinary project, I analyze, together with other Scandinavian researchers, the Lutheran household in the historical making of Nordic societies.