This thesis contains four essays which are all from the broader field of insurance economics. The chapters can be read independently, although there is a certain connection between the articles. Chapter 2, which deals with moral hazard, and chapter 3, which is on oligopolistic models in the...

The aim of this work is to establish a mathematically precise framework for studying games of capital accumulation under uncertainty. Such games arise as a natural extension from different perspectives that all lead to singular control exercised by the agents, which induces some essential...

"This theme paper focuses on political institutions and their effects on social choice. Institutions are argued to play a mediating rolebetween the preferences of individuals and social choices. In addition to playing an endogenous role in molding and channeling preferences, institutions...

This dissertation examines two problems that may arise in matching problems.The first two chapters deal with auctions for multiple units where bidders exhibitexternalities. The third chapter links risk aversion and information to unraveling inlabor markets.Auctions can lead to efficient...

Since Hotelling's (1929) seminal work, economists have tried to understand how product differentiation affects price competition. I study the product location decisions, on a vertical characteristic space, of two sets of horizontal competitors when the inputs supplied by the "upstream" set (the...

Das Wachstum multinationaler Unternehmen (MNU) wird zunehmend durch Investitionen von Dienstleistungsunternehmen vorangetrieben. Die Produktion von Dienstleistungen unterscheidet sich allerdings in mehreren Aspekten von der Herstellung klassischer Industriegüter. Eine zentrale Eigenschaft ist...

A person learns by trial and error if he occasionally tries out new strategies, rejecting choices that are “erroneous” in the sense that they do not lead to higher payoffs. In a game, however, strategies can become erroneous due to a change of behavior by someone else. Such passive errors...