We consider a market where privately informed sellers resort to certification to overcome adverse selection. There is uncertainty about the certifier's ability to generate accurate information. The profit of a monopolistic certifier is an inverted U-shaped function of his reputation for...

Recent literature on biofuels has questioned whether biofuels policies are likely to reduce the negative effects of climate change. In this paper we make two contributions to the literature. First, we study the market effects of a renewable fuel standard in a dynamic model taking into account...

Recent literature on biofuels has questioned whether biofuels policies are likely to reduce the negative effects of climate change. Our analysis explicitly takes into account that oil is a non-renewable natural resource. A blending mandate has no effect on total cumulative oil extraction....

Obwohl heute ein weitgehender Konsens darüber vorliegt, dass der Qualitätssicherung bei Humandienstleistungen ein ganz besonderer Stellenwert zukommt, fehlt eine systematische Auseinandersetzung mit den Gründen und Möglichkeiten einer solchen Qualitätssicherung. Am Beispiel der Bildung,...