Looking for Underlying Structure in WEO Forecasts

This paper examines the statistical properties of the IMF’s World Economic Outlook (WEO) projections over 1999–2023 for 29 economies. The optimism of WEO growth forecasts is well established; we confirm it and look behind it at two features of how the forecasts are built. First, the growth of the systemic economies (the United States and China) appears to be underutilized in the projections: forecasts embed less of the cross-country growth comovement present in the data, a gap we term forecast fragmentation that did not narrow over the sample. Second, the conditional growth–inflation link present in the historical data is weakly represented in the projections. These patterns suggest that structural models, in which such cross-country and real–nominal linkages can be verified through estimation, could be a useful complement to expert judgment, serving as a baseline check for medium-term anchors.