International Financial Institutions have advocated the privatization of integrated agricultural monopsonies in developing countries with the hope that competition between private firms under a contract farming system would reduce inefficiencies in production and enable farmers to obtain a...

Under price ceilings and quality floors for agricultural inputs in cash crop sectors in developing countries where credit markets are weak, imperfect information on the ability of farmers to pay for their inputs at the end of the cropping season may lead the decentralized production of those...

The evaluation of the impact on poverty of social programs depends on how other programs are treated in the analysis and on the assumptions used for estimating poverty measures. This paper applies a simple yet sound method for allocating between various programs the total poverty reduction...

The Gini income elasticity has been used to assess the impact of marginal proportional changes in income from a given source on inequality in total income. This note extends the methodology to take into account income variability.

Commodity producers in Africa often bene?t from guaranteed and relatively stable prices for their crops. This paper shows how to estimate the required increase in crop price necessary to o¤set the higher risk for farmers that price liberalization would entail due to large variations over time...

Welfare comparisons may be sensitive to the assumptions made about economies of scale within households. This paper uses recent advances in sequential stochastic dominance techniques to show how to test for the robustness of poverty and housing quality comparisons to assumptions about economies...

Using an extension of Lucas' model of endogenous growth with education externality, we show that an environmental tax may increase growth. This is because the tax makes physical capital accumulation less attractive, thereby correcting for the underinvestment by agents in human capital.

Although sequential stochastic dominance techniques have been used in the literature to make comparisons of income poverty which are robust to the assumptions made about the economies of scale within households, the techniques could be applied to a much wider set of issues. In this paper, we...

The evaluation of the poverty impact and targeting performance of a given social program may depend on how other programs are treated in the analysis.Using well-known results from cooperative game theory, this paper proposes an empirically simple yet theoretically sound method for allocating...

This paper proposes graphical methods to determine whether commodity-tax changes are "socially improving", in the sense of improving social welfare or decreasing poverty for large classes of social welfare and poverty indices. It also derives estimators of critical poverty lines and economic...