摘要：The global economy has reached record levels of indebtedness, to the concern of researchers and policymakers. On the one hand, debt can be beneficial by smoothing out consumption and accelerating capital accumulation, and thus contributing to economic output. On the other hand, rising debt increases debt service costs and can potentially expose countries to financial risks and lower output. In particular, a large expansion of debt can be associated with a significant economic contraction that can last for years.
