Questions: Banking, Financial Services, and Economic Development

Question 1

What makes banks inherently fragile, and why can even a solvent bank collapse?

• A. Banks hold too little capital relative to their loan losses during downturns
• B. Banks borrow short-term (deposits withdrawable on demand) and lend long-term, creating a mismatch that a simultaneous rush to withdraw can break
• C. Banks invest in volatile equity markets, making their asset values unpredictable
• D. Banks rely on government guarantees that may not materialize during a crisis

Answer: (B)

The maturity mismatch is the fundamental source of bank fragility. Deposits are liabilities that depositors can demand immediately; loans are assets that take years to repay and cannot be quickly liquidated at full value. If many depositors demand their money simultaneously — even from a bank making good loans — the bank cannot generate cash fast enough and fails. This is a bank run. A bank can be fully solvent (assets exceed liabilities in present value) yet still collapse from a pure coordination failure. Option A describes undercapitalization, which is a separate problem; Option C describes investment banking activities, not commercial banking.

Question 2

A developing country has rapidly expanded bank credit to 80% of GDP without building regulatory oversight capacity. What is the most likely risk according to the development economics evidence?

• A. Foreign direct investment will decline as domestic banks crowd out international capital
• B. Rapid credit expansion without regulatory capacity raises the risk of financial crisis, which can devastate growth
• C. The currency will appreciate, harming exporters as capital flows into the banking sector
• D. Savings rates will fall as households shift from deposits to direct equity investment

Answer: (B)

The Asian crisis of 1997 and global crisis of 2008 both illustrate that poorly regulated financial expansion can produce crises that reverse years of development gains. The literature is explicit: financial development requires both the infrastructure (credit, payments, deposits) AND the regulatory capacity (deposit insurance, capital requirements, supervisory institutions) to prevent the inherent fragility of banking from triggering crises. Options A and C describe possible secondary effects but are not the primary identified risk. Option D is implausible in a context where banks are expanding access.

Question 3

Cross-country evidence shows that economies with deeper financial systems grow faster, but this correlation could simply mean that rich countries develop better financial systems — finance follows growth rather than causing it.

• T. True
• F. False

Answer: False

This reverse-causality concern has been directly tested. Studies use financial depth measured in earlier years to predict future growth, even after controlling for current income levels. Financial depth predicts future growth, not just concurrent growth — which is consistent with finance causing growth rather than merely accompanying it. King and Levine (1993) and subsequent research establish this temporal ordering. That said, the relationship is bidirectional and reinforcing; the claim here is that the one-way 'rich countries just get finance' story is empirically insufficient.

Question 4

Deposit insurance solves the bank fragility problem by eliminating the maturity mismatch between short-term deposits and long-term loans.

• T. True
• F. False

Answer: False

Deposit insurance does not eliminate the maturity mismatch — banks still borrow short and lend long. What deposit insurance does is remove the incentive for individual depositors to run. If your deposits are guaranteed, you have no reason to rush to the bank even when you hear rumors of trouble; the coordination failure that causes bank runs is prevented. The mismatch remains. This distinction matters because deposit insurance can prevent panic-driven runs by solvent banks but cannot prevent insolvency caused by bad loans — that requires capital requirements and prudential supervision.

Question 5

Why does financial development contribute to economic growth beyond simply increasing the total volume of loans available? What institutional functions does a developed financial system provide?

Model answer: A developed financial system provides several distinct functions beyond loan volume: (1) Maturity transformation — pooling short-term deposits to fund long-term investments that neither party could sustain alone; (2) Risk diversification — spreading risk across many borrowers so that no single default collapses the system; (3) Information production — credit registries and bank screening identify reliable borrowers, reducing adverse selection and lowering interest rates for creditworthy borrowers; (4) Payment systems — cheap, reliable transfers reduce transaction costs and enable trade over greater distances; (5) Liquidity provision — ensuring that savers can access funds when needed, making them willing to commit to longer-term productive investments. Each function independently loosens a constraint on household saving or firm investment.

Students often reduce finance to 'more credit.' The question pushes toward the institutional functions — information, maturity transformation, payments, risk sharing — that together explain why financial development has broad growth effects beyond a simple credit supply increase. The M-Pesa example in the explainer illustrates the payments function specifically: millions of unbanked Kenyans gained access to a payment system that unlocked trade and investment without conventional bank credit.