Changes in the religious landscape present challenges to conceptualization, methodology and empirical research of religion. The volume, Religion inside and outside Traditional Institutions, which includes contributions to the 2nd conference of the International Society for Empirical Research in Theology (ISERT) in Bielefeld, Germany, responds to these contemporary challenges. While the concept of religious praxis is their common theme, they include a focus on deinstitutionalized religion. The contributions in the first part present and discuss a variety of innovative conceptual, paradigmatic and methodological approaches. Distinguished reports from quantitative and qualitative empirical research make up the second part of this volume. Taken together, they may inspire conceptual and methodological discussion and encourage further research in empirical theology. Contributors include: Johannes A. van der Ven, Leslie J. Francis, Hans-Gunter Heimbrock, Tobias Kladen, Chris Hermans, Hans Schilderman, Kees de Groot, Don S. Browning, Stefan Huber, Ulrich Feeser-Lichterfeld, Anke Terorde, Angela Kaupp, Astrid Dinter, Carsten Gennerich.