This paper analyses optimal contracts in a principal-agent model where the agent is intrinsically motivated at the outset and there is an endogenous relationship between the structure of incentive payments and intrinsic motivation (crowding effects). The analysis shows that crowding effects have...

A theoretical model is adopted in order to examine optimal fare and optimal quality of supply schemes for a transport operator. The analysis shows how fares and quality of supply are related to travel distance and to the transport operator's weight on profit versus consumer surplus. Under...

This paper extends the Puga (1999) model by introducing urban frictions. It assumes that the agglomeration of manufacturing in a city imposes a cost on the inhabitants of the agglomerated region. Furthermore, an implicit function methodology is developed to provide a numerical stability function...

In the traditional model of international trade, labour market reforms in one country are often viewed as beggar-thy-neighbour policies, because they negatively affect the competitiveness and employment levels of the country's trading partners. Empirical evidence, however, suggests that this is...

Angesichts demographischer, sozialer und ökonomischer Veränderungen hat das klassische 'Generationenmodell', in dem die Jungen für die Alten sorgen, ausgedient. Generationengerechtigkeit bezieht sich nicht mehr ausschließlich auf die Solidarität der Jungen mit den Alten, sondern ist zum...

In this paper we design a simple trading strategy to exploit the hypothesized distinct informational content of the arithmetic and geometric mean. The rejection of cointegration between the two stock market indicators supports this conjecture. The profits generated by this cheaply replicable...