We introduce the concept of cooperative substitutes and complements, and use it to throw light on the conditions for a research joint venture to choose equal levels of R&D by all member firms. We show that the second-order conditions for a symmetric optimum take a particularly simple form,...

Grouping models are widely used in economics but are subject to finite sample bias. I show that the standard errors-in-variables estimator (EVE) is exactly equivalent to the Jackknife Instrumental Variables Estimator (JIVE), and use this relationship to develop an estimator which, unlike EVE, is...

The standard public finance analysis of the welfare cost of labour income taxation is based on the estimation of labour supply functions that treat unemployed individuals as non-participants. This paper applies econometric models of multinomial discrete choice to the labour market, explicitly...

We calculate the NAIRU for the U.S. in a framework where inflation and the unemployment rate can respond to each other. The NAIRU is defined as the component of the actual unemployment rate that is uncorrelated with inflation in the long run. Using a structural VAR approach, the NAIRU and core...

This paper analysis the intertemporal public finance decision under political instability. The government’s choice between inflationary finance and foreign debt is constrained by an interest rate, which is affected both by market conditions and debt conditionality. The main result is that...

The empirical finding that exporting firms are more productive on average than non-exporters has provoked a large theoretical literature based on models such as Melitz (2003), where more productive firms are more likely to overcome costs associated with trade. This paper provides a systematic...

Why did the West grow so rapidly over the last 500 years, while much of therest of the world stagnated? And why several countries, especially in East Asia, grown so fast over the last half-century? If we can understand these growth experiences, and identify the forces which made them possible,...

Why, after more than a half-century of under-performance, has the Irish economy finally found its feet? A recent authoritative study suggests five factors, without attempting to rank them: shifting demographic structure, increasing human capital, infrastructural investment, a benign...