Capital account openness shows an inverted U-shape in growth

What the study found: The study found a significant inverted U-shape relationship between capital account openness and economic growth in emerging market economies. In this setting, moderate openness is associated with higher growth, while very high openness may hinder growth.
Why the authors say this matters: The authors say the findings offer guidance for China’s Fifteenth Five-Year Plan and suggest that policy should balance openness with stability. They also report that effective institutions can help reduce the negative effects of excessive openness.
What the researchers tested: The researchers used panel data from emerging market economies covering 1980 to 2022. They examined the link between capital account openness and economic growth, and they also analyzed the mechanism behind that link.
What worked and what didn't: The results indicate an inverted U-shape pattern rather than a simple positive relationship. The study also identifies a "financing promotion—risk accumulation" pathway, with short-term external debt described as a crucial mechanism, and finds that effective institutions mitigate negative effects of excessive openness.
What to keep in mind: The abstract does not describe detailed limitations beyond the study’s focus on emerging market economies and the 1980–2022 period.

Key points

• The study reports a significant inverted U-shape relationship between capital account openness and economic growth.
• Moderate openness is associated with higher growth, while excessive openness may reduce growth.
• The authors identify a "financing promotion—risk accumulation" pathway, with short-term external debt as a key mechanism.
• Effective institutions are reported to mitigate the negative effects of excessive openness.
• The authors say the findings may guide China’s Fifteenth Five-Year Plan.