The authors investigate the role played by the political climate and other covariates on the prevalence of undernourishment for 34 low-income countries across a 21-year period.
Political climate is measured in terms of political freedoms and civil liberties. The authors follow a Granger causality approach, which looks at predictive causality (i.e. causality in a temporal sense). For the socio-economic data, the authors rely on annual time series data from the World Bank.
Most of the findings are in keeping with our expectations: (1) Lowering women's fertility rate lowers undernourishment; (2) undernourishment converges to its long-run equilibrium path in response to changes in income, political climate, health expenditure, fertility rate and drinking water access; (3) the effect of an instantaneous shock from income, changes to the political climate, health expenditure, fertility rate and drinking water access on undernourishment are completely adjusted in the long run. One surprising result is that there is a positive and significant relationship between the prevalence of undernourishment and political freedom. The authors offer several possible explanations for this unexpected result.
Given our results, careful attention to the co-curation of policies is desirable. As an example, the authors would advocate a more proactive role by the richer countries in terms of their commitments to foreign aid in addressing the identified problems.
The authors use advanced panel data techniques, considering a long span of time. Unlike other studies which aim to establish correlations, the authors test for Granger causality.
