We categorize goods by how exportable they could be for low-income countries, and find that in countries that receive more aid, more exportable sectors grow substantially more slowly than less exportable ones. The numbers suggest that in countries that receive additional aid of 1 percent of GDP, exportable sectors grow more slowly by 0.5 percent per year (and clothing and footwear sectors that are particularly exportable in low-income countries grow slower by 1 percent per year).
We also provide suggestive evidence that the channel through which this effect is felt is the exchange rate. In other words, aid tends to make a country less competitive (reflected in an overvalued exchange rate) which in turn depresses the prospects of the more exportable sectors. In the jargon, this is the famous “Dutch Disease” effect of aid.
Paper by Subramanian and Rajan here