Through the Looking-Glass, and What OLS Found There: On Growth, Foreign Aid, and Reverse Causality
AbstractThe cross-country literature on foreign aid effectiveness has relied on the use of instruments to distinguish causality from mere correlation. This paper uses simple non-instrumental techniques in the spirit of Granger to demonstrate that the main aid-growth connection is a negative causal relationship from growth to aid—-aid, that is, as a fraction of recipient GDP. Coarsely, when GDP goes up, aid/GDP goes down. The endogeneity of aid, long suspected, is real. Less understood is that adding certain common controls to regressions puts this relationship through the looking glass, flipping both its sign and apparent direction: aid seems to cause growth. Ideally, instrumentation expunges the endogeneity shown here. In practice, estimates of aid’s impact have run into problems. Autocorrelation in the errors is widespread, and can render endogenous lagged variables used as regressors or instruments. The pitfalls of “difference” and “system” include invalidity and proliferation of instruments. Multicollinearity in term pairs of interest, such as aid and aid2 or “project” and “program” aid, can amplify endogeneity bias. The combination of specification problems and widespread fragility (shown in earlier work) leads to pessimism about the ability of cross-country econometrics to demonstrate aid effectiveness. This does not rule an average positive effect, nor does it contradict the fact that aid has saved millions of lives, but it does suggest that the average effect on economic growth is too small to be detected statistically.
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Bibliographic InfoPaper provided by Center for Global Development in its series Working Papers with number 137.
Length: 21 pages
Date of creation: Jan 2008
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Web page: http://www.cgdev.org
foreign aid; economic growth;
Find related papers by JEL classification:
- B40 - Schools of Economic Thought and Methodology - - Economic Methodology - - - General
- F35 - International Economics - - International Finance - - - Foreign Aid
- O11 - Economic Development, Technological Change, and Growth - - Economic Development - - - Macroeconomic Analyses of Economic Development
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- Patrick Guillaumont, 2011. "Aid effectiveness for poverty reduction:macroeconomic overview and emerging issues," Working Papers halshs-00554285, HAL.
- Thomas Ziesemer, 2011.
"Growth with endogenous migration hump and the multiple, dynamically interacting effects of aid in poor developing countries,"
Applied Economics, Taylor & Francis Journals,
Taylor & Francis Journals, vol. 43(30), pages 4865-4878.
- Ziesemer, Thomas, 2008. "Growth with Endogenous Migration Hump and the Multiple, Dynamically Interacting Effects of Aid in Poor Developing Countries," MERIT Working Papers 057, United Nations University - Maastricht Economic and Social Research Institute on Innovation and Technology (MERIT).
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