What the study found
The study finds a non-monotonic, inverted-U relationship between financial development and growth in an endogenous growth model with search frictions and congestion effects in credit and innovation markets.
Why the authors say this matters
The authors conclude that financial development has two opposing effects: it can ease access to funding, but it can also draw more firms into research and development (R&D), which means competition for scarce innovation resources. They suggest that excessive financial development may slow technological progress.
What the researchers tested
The researchers studied an endogenous growth model that includes search frictions, meaning matching frictions in credit markets, and congestion effects in credit and innovation markets. They also allowed for firm heterogeneity, which can generate composition effects, and they calibrated the model close to the U.S. economy.
What worked and what didn't
The interaction of the two frictions produced a hump-shaped pattern between financial development and growth. The direct finance channel was positive, but the indirect congestion channel was negative, and the overall relationship was inverted-U shaped. The mechanism remained robust with firm heterogeneity, and in the U.S.-style calibration the effect of finance on growth was negative but quantitatively small.
What to keep in mind
The abstract does not describe empirical data or external tests beyond the calibration. It also does not provide detailed limitations beyond noting that the U.S.-calibrated effect is small.
Key points
- The model links financial development and growth with an inverted-U relationship.
- Financial development has a positive funding channel and a negative congestion channel.
- More financial activity can increase competition for scarce innovation resources.
- The mechanism remains robust when firm heterogeneity is included.
- In a U.S.-style calibration, the effect of finance on growth is negative but small.
Disclosure
- Research title:
- Financial development and growth show an inverted-U pattern
- Authors:
- Daria Finocchiaro, Philippe Weil
- Institutions:
- Swedish National Bank, Centre for Economic Policy Research, Université Libre de Bruxelles
- Publication date:
- 2026-03-11
- OpenAlex record:
- View
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