The long-recognized spurious regressions problem can lead to mistaken inference in panel instrumental variables (IV) estimation. Spurious correlations arising from correlated cycles in finite time horizons can make irrelevant instruments appear strong with signable consequences for estimated IV...

This paper examines the nonfarm employment choice of individuals using panel data from Ethiopia that covers the period 1994-2004. Non-farm activities that require more resources in the form of skill or capital yield higher returns but employ proportionately fewer people. Women have lower...

Food-for-work (FFW) programmes have been widely heralded as a means of providing self-targeting transfers coupled with investment in public goods. This paper reviews the changing context that has sparked such interest in FFW, the simple theory that makes it so conceptually appealing, and...

Various plants and resources such as orchards are vulnerable to the detrimental effects of successful invasions by alien animal or plant species. To outline an appropriate policy response, we first use renewal theory to construct a stochastic model of optimal orchard management in the presence...

Goods are often allocated publically by means of queuing processes in developing countries.In such situations, which group of citizens should a corrupt government official favor? In addition,what should be the basis for this favoritism? To the best of our knowledge, these salient questionshave...

Biodiversity prospecting refers to the exploration of the commercial value of genetic and biochemical resources. In this chapter, we study a drug producing pharmaceutical firm (PF) that searches for potentially useful chemicals made by wild organisms in a conservation area. This PF is able to...