Claire Delpeuch and Colin Poulton

Research Paper 22

This paper discusses the estimation methods used in Anderson and Masters (2009) to calculate nominal rates of assistance (NRAs) for cotton and other traditional export cash crops in sub- Saharan Africa (SSA) and offers alternative estimates for cotton for a sub-set of countries, on the basis of a standardised approach, alternative data sources and correcting some basic but important errors concerning processing ratios.