This paper analyzes the role of public and private responsibility in the provision of public goods. We emphasise that a typical public good will require many different inputs which raises the possibility of partnerships to exploit comparative advantages of different parties. But hold-up problems...

In a world with asymmetric information, contractual terms are an important incentive device. This paper studies the effect of crop characteristics on the choice between short-term and long-term tenancy contracts and on the choice between sharecropping and fixed rent contracts when the production...

The purpose of this paper is to identify the organisational comparative advantage of NGOs, and to develop a model which explains the set of circumstances uder which they emerge and dominate other types of firms. It is argued that the potential superiority of NGOs derives from two features: (1)...

This paper develops a simple model to show how social insurance affects the desire to revolt against property rights. It then tests for the effect of social insurance on revolt by introducing a panel data set derived from surveys across 200,000 randomly sampled individuals from the 1970s to the...

Despite their potentially strong impact on poverty, agricultural innovations are often adopted slowly. Using a unique household dataset on sunflower adoption in Mozambique, we analyse whether and how individual adoption decisions depend upon the choices of others in the same social networks....

Disadvantaged groups tend also to constitute population minorities. One consequence of this is that the policies implemented by electorally accountable governments often fail to reflect minority interests. A policy solution is to enhance the political power of minority groups as a vehicle for...

We investigate a new separable nonparametric model for time series, which includes many ARCH models and AR models already discussed in the literature. We also propose a new estimation procedure based on a localization of the econometric method of instrumental variables. Our method has...

This paper examines a nonparametric test for Granger-causality for a vector covariance stationary linear process under, possibly, the presence of long-range dependence. We show that the test converges to a non-distribution free multivariate Gaussian process, say vec (B(µ)) indexed by µ ?...

As the exact discrete model induced by an open continuous time system depends on the continous time paths of the exogenous variables, these need to be interpolated for the purpose of estimation. We examine some recently suggested forms of interpolation and find them not to be completely...

Semiparametric estimates of long memory seem useful in the analysis of long financial time series because they are consistent under much broader conditions than parametric estimates. However, recent large sample theory for semiparametric estimates forbids conditional heteroscedasticity. We show...