This doctoral Research Associate position is part of an interdisciplinary graduate program funded by the German Research Foundation (DFG), focusing on the descriptive and normative dimensions of collective decision-making. Doctoral researchers conduct dissertation research in Economics, Philosophy, or Political Science while engaging in a structured qualification program combining theoretical, empirical, and experimental approaches. The program examines how preferences, beliefs, institutions, and procedures shape collective decisions and governance, preparing scholars to address complex societal challenges through interdisciplinary analysis.