A venture capitalist faces a trade-off between the extent of managerial advice allocated to each start-up and the total number of firms advised. Diminishing returns to advice per firm call for a larger portfolio. As advice gets diluted, further expansion of the portfolio eventually becomes...

We analyze some macroeconomic implications that follow from the fact that people tend to consume higher-quality goods as their incomes rise. The model involves two sectors: one producing a homogeneous good and the other producing a product with variable levels of quality. Both sectors use...

In recent years a large number of experimental studies have documented the existence of strong reciprocity among humans. Strong reciprocity means that people willingly repay gifts and punish the violation of cooperation and fairness norms even in anonymous one-shot encounters with genetically...

Two macro models - one for a closed economy and the other for a small open economy - are used to examine the scope for income redistribution and employment creation. In particular, the introduction of both a guaranteed annual income (basic income) and an employment subsidy are examined, and...

We consider taxation by a Leviathan government and by a utilitarian government in the presence of heterogenous locations within a country, when migration from one country to another is and is not possible. In a closed economy, a utilitarian government may transfer income from the poor to the...

We consider a firm that is subject to employment protection laws that limit the firm's ability to fire labor. In particular, we suppose that though a firm which shuts down can fire all its workers, it may fire no fewer. Compared to a firm that is subject to no employment protection, a firm...

We consider duopolists innovating and producing a good subject to network externalities, so that the reservation price of a consumer increases with aggregate consumption. The post-innovation network consists of two compatible sub-networks, with increased network valuation of the new product....

Consider a public project which produces a consumption good and which benefits ruture generations. Let a conventional cost-benefit analysis find that it gives higher benefits than projects it would dis-place in the private sector. Voters may nevertheless oppose the public project: the...

In this paper we argue that strong political economy forces explain the rush of the EU to expand eastwards. We use a model of vertical product differentiation in order to claim that technologically- advanced EU firms (residing in high-income member countries) prefer a mutual market-opening with...

This paper shows that labor market institutions are important for the formation of new enterprises. The effects of labor market institutions on entrepreneurship, wage determination, and firm size are analysed analytically and illustrated numerically. The main result is that an increase in union...