The role of the commodity price boom in shaping public social spending: Evidence from Latin America
研究了2003至2013年大宗商品价格繁荣对16个拉美国家公共社会支出的影响，发现各国反应差异巨大，仅阿根廷和厄瓜多尔有持续增长，商品繁荣既非必要也非充分条件。
We study the potential impact of the commodity price boom of 2003 to 2013 on public social spending in Latin America. We estimate structural vector autoregressions and local projections for 16 Latin American countries over the period from 1990 to 2019 and investigate if we can attribute increases in public spending on health, education, and social protection to increases in a country’s net commodity terms-of-trade. By focusing on the impulse responses derived from country-specific estimations, we find a huge variety in response patterns. Our study finds that two countries experienced lasting increases in public social spending due to the commodity boom (Argentina, Ecuador). Some others observed at least temporary increases of few years (Brazil, Mexico), reacted first with declines and then rises (Chile), and yet others did not respond at all (Bolivia, Colombia, Peru). As expected, we cannot relate public social spending with commodity prices in countries without commodity price boom. Among countries with positive responses, there is no clear tendency concerning the function of spending that benefits most. We discuss potential explanations behind the heterogeneity of our country-wise results and conclude that the presence of left-wing governments, fiscal rules, natural resource funds and economic diversification provide plausible explanations for single country cases, but no general patterns emerge. We conclude that the commodity price boom was neither necessary nor sufficient for social policy expansion in Latin America, and factors explaining its effects differ from country to country. Our study highlights the importance of in-depth examinations of country-specific factors and the need of (currently lacking) high-quality time series data in development research.