Global growth prospects have deteriorated in 2016. Emerging market and developing economies are facing increased external headwinds, including softer growth in advanced economies. Commodity exporters are struggling with particularly challenging conditions, while commodity importers are thus far showing greater resilience. Global growth is expected to gradually accelerate in 2017-18, but downside risks to the outlook are increasingly pronounced. In addition to discussing global and regional economic developments and prospects, this edition of Global Economic Prospects includes two Special Focus essays of critical importance for emerging and developing economies: an analysis of the buildup of private debt in emerging and frontier markets and a quantitative study of uncertainties surrounding global growth.