Ever since Marshall (1890) agglomeration externalities have been viewed as the key factor explaining the existence of cities and their size. However, while the various micro foundations of agglomeration externalities stress the importance of Total Factor Productivity (TFP), the empirical...

Larger cities typically give rise to two opposite effects: tougher competition among firms and higher production costs. Using an urban model with substitutability of production factors and pro-competitive effects, I study the response of the market outcome to city size, land-use regulations, and...

The purpose of this paper is to model the influence of Kantian moral scruples in a dynamic environment. Our objectives are two-fold. Firstly, we investigate how a Nash equilibrium among agents who have moral scruples may ensure that the exploitation of a common property renewable resource is...

Although the relationship between natural resources and civil war has received much attention, little is known about the underlying mechanisms. Controversies and contradictions in the stylized facts persist because resource extraction is treated as exogenous while in reality fighting affects...

Per Magnus Wijkman was the first foreign observer to urge Iceland in print to regulate its fisheries by price. This was in 1975, nine years before the Icelandic fishing quota system came into effect, a system judged discriminatory and unconstitutional by the Supreme Court of Iceland in 1998 (but...

We analyse the local effect of exogenous shocks to the value of mineral deposits at the district level in Indonesia using a panel of manufacturing plants. To the best of our knowledge, we are the first to model and estimate the effect of heterogeneity in natural resource extraction methods. We...

This paper explores the effect of natural resource dependence on market concentration of imports. Using a new panel database for importing firms in developing and emerging market economies, the paper shows that higher natural resource dependence is associated with larger market concentration of...

Why are average hours worked per adult lower in rich countries than in poor countries? We consider two natural explanations: income effects in preferences, in which leisure becomes more valuable when income rises, and distortionary tax systems, which are more prevalent in richer countries. To...

Interest-rate spreads fluctuate widely across time and countries. We characterize their behavior using some 3,200 quarterly observations for 21 advanced and 17 emerging economies since the early 1990s. Before the financial crisis, spreads are 10 times more volatile in emerging economies than in...

We provide an overview of the integration of refugees into the labor markets of a number of high-income countries. Discussing the ways in which refugees and economic migrants are differently selected and so might be expected to perform differently in a host country's labor market, we examine...