Working Papers
2021
February 19, 2021
What Drives Innovation? Lessons from COVID-19 R&D
Description: To examine the drivers of innovation, this paper studies the global R&D effort to fight the deadliest diseases and presents four results. We find: (1) global pharmaceutical R&D activity—measured by clinical trials—typically follows the ‘law of diminishing effort’: i.e. the elasticity of R&D effort with respect to market size is about ½ in the cross-section of diseases; (2) the R&D response to COVID-19 has been a major exception to this law, with the number of COVID-19 trials being 7 to 20 times greater than that implied by its market size; (3) the aggregate short-term elasticity of science and innovation can be very large, as demonstrated by aggregate flow of clinical trials increasing by 38% in 2020, with limited crowding out of trials for non-COVID diseases; and (4) public institutions and government-led incentives were a key driver of the COVID-19 R&D effort—with public research institutions accounting for 70 percent of all COVID-19 clinical trials globally and being 10 percentage points more likely to conduct a COVID-19 trial relative to private firms. Overall, while economists are naturally in favor of market size as a driving force for innovation (i.e.“if the market size is sufficiently large then innovation will happen”), our work suggests that scaling up global innovation may require a broader perspective on the drivers of innovation—including early-stage incentives, non-monetary incentives, and public institutions.
February 19, 2021
Foreign Exchange Intervention: A Dataset of Public Data and Proxies
Description: A better understanding of foreign exchange intervention (FXI) is often hindered by the lack of data. This paper provides a new dataset of FXI covering a large number of countries since 2000 at monthly and quarterly frequencies. It includes published official data for about 40 countries as well as carefully constructed estimates for 122 countries. Estimates account for a wide range of central bank operations, including both spot and derivative transactions. These estimates improve upon traditional proxies based on changes in reserves, by adjusting for valuation changes, income flows, and changes in other foreign-currency balance sheet positions (both vis-à-vis residents and non-residents)—the first estimates to do the latter to our knowledge—thus providing a more accurate measure of operations that change the central bank’s foreign currency position. The dataset also provides a classification of FXI operations into sterilized or not sterilized, a key dimension for economic analysis. Finally, the paper discusses the merits of the new estimates relative to traditional proxies, and presents stylized facts. The dataset is updated regularly. Data available through the link above.
February 19, 2021
Stay Competitive in the Digital Age: The Future of Banks
Description: The latest advancement in financial technology has posed unprecedented challenges for incumbent banks. This paper analyzes the implications of these challenges on bank competitveness, and explores the factors that could support digital advancement in banks. The analysis shows that the traditionally leading role of banks in advancing financial technology has diminished in recent years, and suggests that onoing efforts to catch up to the digital frontier could lead to a more concentrated banking industry, as smaller and less tech-savvy banks struggle to survive. Cross-country evidence has suggested that banks in high-income economies appear to have been the digital leaders, likely benefiting from a sound digital infrastructure, a strong legal and business environment, and healthy competition. Nonetheless, some digital leaders may fall behind in the coming years in adopting newer technologies due to entrenched consumer behavior favoring older technologies, less active fintech and bigtech companies, and weak bank balance sheets.
February 19, 2021
Post-Covid-19 Recovery and Resilience: Leveraging Reforms for Growth and Inclusion in Sub-Saharan Africa
Description: Covid-19 has exacerbated economic and social vulnerabilities across Sub-Saharan Africa (SSA). There is a risk that growth could be lower for longer, with a setback to development. Post-pandemic reforms thus become even more important, especially with constrained scope for fiscal and monetary stimuli. Reforms could boost per capita growth by an additional 0.3-1.3 percentage points, relative to the 1.9 percent average since 2010. Such growth would reduce per capita income doubling time from 37 years to about 22 years. Low-income countries stand to gain the most from reforms. The largest gains come from governance, products markets, and factor accumulation. Importantly, these reforms can be implemented in the post-pandemic environment characterized by weaker social and distributional outcomes.
February 19, 2021
Zombies on the Brink: Evidence from Japan on the Reversal of Monetary Policy Effectiveness
Description: How does unconventional monetary policy affect corporate capital structure and investment decisions? We study the transmission channel of quantitative easing and its potential diminishing returns on investment from a corporate finance perspective. Using a rich bank-firm matched data of Japanese firms with information on corporate debt and investment, we study how firms adjust their capital structure in response to the changes in term premia. Investment responds positively to a reduction in the term premium on average. However, there is a significant degree of cross-sectional variation in firm response: healthier firms increase capital spending and cash holdings, while financially vulnerable firms take advantage of lower long-term yields to refinance without increasing investment.
February 19, 2021
Credit Cycles, Fiscal Policy, and Global Imbalances
Description: We study the role that changes in credit and fiscal positions play in explaining current account fluctuations. Empirically, the current account declines when credit increases, and when the fiscal balance declines. We use a two-country model with financial frictions and fiscal policy to study these facts. We estimate the model using annual data for the U.S. and “a rest of the world” aggregate that includes main advanced economies. We find that about 30 percent of U.S. current account balance fluctuations are due to domestic credit shocks, while fiscal shocks explain about 14 percent. We evaluate simple macroprudential policy rules and show that they help reduce global imbalances. By taming the financial cycle, macroprudential rules that react to domestic credit conditions or to domestic house prices would have led to a smaller and less volatile U.S. current account deficit. We also show that a countercylical fiscal policy rule that stabilizes output growth reduces the level and volatility of the U.S. current account deficit.
February 19, 2021
Why U.S. Immigration Matters for the Global Advancement of Science
Description: This paper studies the impact of U.S. immigration barriers on global knowledge production. We present four key findings. First, among Nobel Prize winners and Fields Medalists, migrants to the U.S. play a central role in the global knowledge network—representing 20-33% of the frontier knowledge producers. Second, using novel survey data and hand-curated life-histories of International Math Olympiad (IMO) medalists, we show that migrants to the U.S. are up to six times more productive than migrants to other countries—even after accounting for talent during one’s teenage years. Third, financing costs are a key factor preventing foreign talent from migrating abroad to pursue their dream careers, particularly for talent from developing countries. Fourth, certain ‘push’ incentives that reduce immigration barriers—by addressing financing constraints for top foreign talent—could increase the global scientific output of future cohorts by 42 percent. We concludeby discussing policy options for the U.S. and the global scientific community.
February 19, 2021
How Does Profit Shifting Affect the Balance of Payments?
Description: Profit shifting by multinational enterprises—through manipulation of transfer prices of related-party trade, intragroup lending, or the location of intangibles—affects international flows, raising the question of its impact on the current account and external balances. This paper approaches this question theoretically and empirically. In theory, profit shifting distorts the components of the current account and bilateral current account balances but leaves a country’s aggregate net balance unaffected. There is, however, a real effect on current account balances, because taxes are paid to different jurisdictions. Moreover—in practice—the measured current account could change, because not all transactions are equally easy to track. Our panel empirical results broadly confirm that the current account balance tends to be, on average, unaffected by profit shifting, but taking heterogeneity into account we find that both the real tax effect and mismeasurement strengthen income balances—and thus the current account—in investment hubs.
February 12, 2021
Income Inequality in Small States and the Caribbean: Stylized Facts and Determinants
Description: Rising income inequality has emerged as a major policy issue facing policymakers, but there is a dearth of empirical work on inequality in small states, including the Caribbean. Despite data limitations, the empirical analysis using a sample of small states finds that increased openness and deeper economic integration including financial market openness is associated with lower income inequality, whereas elevated debt levels limit fiscal space and are associated with higher income inequality. An important policy implication is that well targeted social sector spending aimed at improving education and health indicators will support increased redistribution and reduce income inequality.
February 12, 2021
Foreign Exchange Intervention Rules for Central Banks: A Risk-based Framework
Description: This paper presents a rule for foreign exchange interventions (FXI), designed to preserve financial stability in floating exchange rate arrangements. The FXI rule addresses a market failure: the absence of hedging solution for tail exchange rate risk in the market (i.e. high volatility). Market impairment or overshoot of exchange rate between two equilibria could generate high volatility and threaten financial stability due to unhedged exposure to exchange rate risk in the economy. The rule uses the concept of Value at Risk (VaR) to define FXI triggers. While it provides to the market a hedge against tail risk, the rule allows the exchange rate to smoothly adjust to new equilibria. In addition, the rule is budget neutral over the medium term, encourages a prudent risk management in the market, and is more resilient to speculative attacks than other rules, such as fixed-volatility rules. The empirical methodology is backtested on Banco Mexico’s FXIs data between 2008 and 2016.