Guest Editorial: Lambsdorff, Johann Graf, Günther G. Schulze What Can We Know About Corruption? A Very Short History of Corruption Research and a List of What We Should Aim For Original Papers: De Rosa, Donato, Nishaal Gooroochurn, Holger Görg: Corruption and Productivity: Firm-level Evidence Ivlevs, Artjoms, Timothy Hinks: Bribing Behaviour and Sample Selection: Evidence from Post-Socialist Countries and Western Europe Liu, Qijun, Yaping Peng: Determinants of Willingness to Bribe: Micro Evidence from the Educational Sector in China Gouda, Moamen, Sang-Min Park: Religious Loyalty and Acceptance of Corruption Li, Sha, Christoph Bühren, Björn Frank, Haiying Qin: Group Decision Making in a Corruption Experiment: China and Germany Compared Khachatryan, Elina, Sebastian Kube, Björn Vollan: Mitigating Extortive Corruption? Experimental Evidence