Entrepreneurial Human Capital and Firm Dynamics

This paper shows that entrepreneurial human capital is a key driver of firm dynamics using administrative panel data on the universe of firms and workers in Portugal. Firms started by more educated entrepreneurs are larger at entry and exhibit higher life cycle growth. Consistent with an effect on growth, the thickness of the right tail of the size distribution increases with entrepreneur schooling. The evidence points to several underlying mechanisms, with technology adoption playing the most important part. I develop and estimate a model of firm dynamics that can parsimoniously account for these findings, and use it to draw aggregate implications. Accounting for the effect of entrepreneurial human capital on firm dynamics can substantially increase aggregate returns to schooling and the fraction of cross-country income differences explained by human and physical capital.

Liquidity Constraints in the U.S. Housing Market

We study the severity of liquidity constraints in the U.S. housing market using a life-cycle model with uninsurable idiosyncratic risks in which houses are illiquid, but agents can extract home equity by refinancing their mortgages. The model implies that four-fifths of homeowners are liquidity constrained and willing to pay an average of 13 cents to extract an additional dollar of liquidity from their home. Most homeowners value liquidity for precautionary reasons, anticipating the possibility of income declines and the need to make mortgage payments. The model reproduces well the observed response of consumption to tax rebates and mortgage relief programs and predicts large welfare gains from policies aimed at providing temporary liquidity relief to homeowners.

International Spillovers and Local Credit Cycles

This paper studies the transmission of the Global Financial Cycle (GFC) to domestic credit market conditions in a large emerging market, Turkey, over 2003–13. We use administrative data covering the universe of corporate credit transactions matched to bank balance sheets to document four facts: (1) an easing in global financial conditions leads to lower borrowing costs and an increase in local lending; (2) domestic banks more exposed to international capital markets transmit the GFC locally; (3) the fall in local currency borrowing costs is larger than foreign currency borrowing costs due to the comovement of the uncovered interest rate parity (UIP) premium with the GFC over time; (4) data on posted collateral for new loan issuances show that collateral constraints do not relax during the boom phase of the GFC.

Risk Premium Shocks Can Create Inefficient Recessions

We develop a simple flexible-price model of business cycles driven by spikes in risk premiums. Aggregate shocks increase firms’ uninsurable idiosyncratic risk and raise risk premiums. We show that risk shocks can create quantitatively plausible recessions, with contractions in employment, consumption, and investment. Business cycles are inefficient—output, employment, and consumption fall too much during recessions, compared to the constrained-efficient allocation. Optimal policy involves stimulating employment and consumption during recessions.

Collateral Booms and Information Depletion

We develop a new theory of information production during credit booms. Entrepreneurs need credit to undertake investment projects, some of which enable them to divert resources. Lenders can protect themselves from such diversion in two ways: collateralization and costly screening, which generates durable information about projects. In equilibrium, the collateralization-screening mix depends on the value of aggregate collateral. High collateral values make it possible to reallocate resources towards productive projects, but they also crowd out screening. This has important dynamic implications. During credit booms driven by high collateral values (e.g. real estate booms), economic activity expands but the economy’s stock of information on existing projects gets depleted. As a result, collateral-driven booms end in deep crises and slow recoveries: when booms end, investment is constrained both by the lack of collateral and by the lack of information on existing projects, which takes time to rebuild. We provide empirical support for the mechanism using US firm-level data.

Liquidity Risk and Long-Term Finance: Evidence from a Natural Experiment

Banks in low-income countries face severe liquidity risk due to volatile deposits, which destabilize their funding, and dysfunctional liquidity markets, which induce expensive interbank and central bank lending. Such liquidity risk dissuades the transformation of short-term deposits into long-term loans and deters long-term investment. To validate this mechanism, we exploit a Sharia-compliant levy in Pakistan, which generates unintended and quasi-experimental variation in liquidity risk, with data from the credit registry and firm imports. We find that banks with a stronger exposure to liquidity risk lower their supply of long-term finance, which reduces the long-term investment of connected firms.

Confidence and the Propagation of Demand Shocks

We revisit the question of why shifts in aggregate demand drive business cycles. Our theory combines intertemporal substitution in production with rational confusion, or bounded rationality, in consumption and investment. The first element allows aggregate supply to respond to shifts in aggregate demand without nominal rigidity. The second introduces a “confidence multiplier,” that is, a positive feedback loop between real economic activity, consumer expectations of permanent income, and investor expectations of returns. This mechanism amplifies the business-cycle fluctuations triggered by demand shocks (but not necessarily those triggered by supply shocks); it helps investment to comove with consumption; and it allows front-loaded fiscal stimuli to crowd in private spending.

The Gift of Moving: Intergenerational Consequences of a Mobility Shock

We exploit a volcanic “experiment” to study the costs and benefits of geographic mobility. In our experiment, a third of the houses in a town were covered by lava. People living in these houses were much more likely to move away permanently. For the dependents in a household (children), our estimates suggest that being induced to move by the “lava shock” dramatically raised lifetime earnings and education. While large, these estimates come with a substantial amount of statistical uncertainty. The benefits of moving were very unequally distributed across generations: the household heads (parents) were made slightly worse off by the shock. These results suggest large barriers to moving for the children, which imply that labor does not flow to locations where it earns the highest returns. The large gains from moving for the young are surprising in light of the fact that the town affected by our volcanic experiment was (and is) a relatively high income town. We interpret our findings as evidence of the importance of comparative advantage: the gains to moving may be very large for those badly matched to the location they happened to be born in, even if differences in average income are small.