Frontmatter -- Inhalt / Contents -- Guest Editorial: Special Issue on Corruption at the Grassroots-level What Can We Know About Corruption? -- Abhandlungen/Original Papers -- Corruption and Productivity: Firm-level Evidence -- Bribing Behaviour and Sample Selection: Evidence from Post-Socialist Countries and Western Europe -- Determinants of Willingness to Bribe: Micro Evidence from the Educational Sector in China -- Religious Loyalty and Acceptance of Corruption -- Group Decision Making in a Corruption Experiment: China and Germany Compared -- Mitigating Extortive Corruption? Experimental Evidence -- Backmatter