Knowledge that Transforms

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Impacts of Entry by Counterfeiters*

Quarterly Journal of Economics 2008 123(4), 1577-1609
This paper uses a natural experiment to test the impact of counterfeiting under weak intellectual property rights. I collect new panel data from Chinese shoe companies from 1993–2004. By exploiting the discontinuity of government enforcement efforts for the footwear sector in 1995 and the differences in authentic companies' relationships with the government, I identify and measure the effects of counterfeit entry on authentic prices, qualities, and other market outcomes. The results show that brands with less government protection differentiate their products through innovation, self-enforcement, vertical integration of downstream retailers, and subtle high-price signals. These strategies push up authentic prices and are effective in reducing counterfeit sales.

Estimating Trade Flows: Trading Partners and Trading Volumes*

Quarterly Journal of Economics 2008 123(2), 441-487 open access
We develop a simple model of international trade with heterogeneous firms that is consistent with a number of stylized features of the data. In particular, the model predicts positive as well as zero trade flows across pairs of countries, and it allows the number of exporting firms to vary across destination countries. As a result, the impact of trade frictions on trade flows can be decomposed into the intensive and extensive margins, where the former refers to the trade volume per exporter and the latter refers to the number of exporters. This model yields a generalized gravity equation that accounts for the self-selection of firms into export markets and their impact on trade volumes. We then develop a two-stage estimation procedure that uses an equation for selection into trade partners in the first stage and a trade flow equation in the second. We implement this procedure parametrically, semiparametrically, and nonparametrically, showing that in all three cases the estimated effects of trade frictions are similar. Importantly, our method provides estimates of the intensive and extensive margins of trade. We show that traditional estimates are biased and that most of the bias is due not to selection but rather due to the omission of the extensive margin. Moreover, the effect of the number of exporting firms varies across country pairs according to their characteristics. This variation is large and particularly so for trade between developed and less developed countries and between pairs of less developed countries.

Sticky Borders*

Quarterly Journal of Economics 2008 123(2), 531-575
The stickiness and currency of pricing of traded goods play a central role in international macroeconomics; however, empirical evidence on these features is seriously limited. To address this, we use micro data on U.S. import and export prices at the dock for the period 1994–2005 and present four main results: First, the median price duration in the currency of pricing is 10.6 (12.8) months for imports (exports). Second, 90% (97%) of imports (exports) are priced in dollars. Consequently, contrary to standard modeling assumptions, for the United States, there is producer currency pricing in exports and local currency pricing in imports. Third, import price rigidity has increased by ten percentage points, with increasing rigidity in differentiated goods prices. Fourth, even conditioning on a price change, exchange rate pass-through into U.S. import prices is low, at 22%.

Why Has CEO Pay Increased So Much?*

Quarterly Journal of Economics 2008 123(1), 49-100
This paper develops a simple equilibrium model of CEO pay. CEOs have different talents and are matched to firms in a competitive assignment model. In market equilibrium, a CEO's pay depends on both the size of his firm and the aggregate firm size. The model determines the level of CEO pay across firms and over time, offering a benchmark for calibratable corporate finance. We find a very small dispersion in CEO talent, which nonetheless justifies large pay differences. In recent decades at least, the size of large firms explains many of the patterns in CEO pay, across firms, over time, and between countries. In particular, in the baseline specification of the model's parameters, the sixfold increase of U.S. CEO pay between 1980 and 2003 can be fully attributed to the sixfold increase in market capitalization of large companies during that period.

Systemic Crises and Growth*

Quarterly Journal of Economics 2008 123(1), 359-406
Countries that have experienced occasional financial crises have, on average, grown faster than countries with stable financial conditions. Because financial crises are realizations of downside risk, we measure their incidence by the skewness of credit growth. Unlike variance, negative skewness isolates the impact of the large, infrequent, and abrupt credit busts associated with crises. We find a robust negative link between skewness and GDP growth in a large sample of countries over 1960–2000. This suggests a positive effect of systemic risk on growth. To explain this finding, we present a model in which contract enforceability problems generate borrowing constraints and impede growth. In financially liberalized economies with moderate contract enforceability, systemic risk taking is encouraged and increases investment. This leads to higher mean growth but also to greater incidence of crises. In the data, the link between skewness and growth is indeed strongest in such economies.

Occupational Choice and the Spirit of Capitalism*

Quarterly Journal of Economics 2008 123(2), 747-793 open access
The British Industrial Revolution triggered a socioeconomic transformation whereby the landowning aristocracy was replaced by industrial capitalists rising from the middle classes as the economically dominant group. We propose a theory of preference formation under financial market imperfections that can account for this pattern. Parents shape their children's preferences in response to economic incentives. Middle-class families in occupations requiring effort, skill, and experience develop patience and a work ethic, whereas upper-class families relying on rental income cultivate a refined taste for leisure. These class-specific attitudes, which are rooted in the nature of preindustrial professions, become key determinants of success once industrialization transforms the economic landscape.

Dopamine, Reward Prediction Error, and Economics*

Quarterly Journal of Economics 2008 123(2), 663-701
The neurotransmitter dopamine has been found to play a crucial role in choice, learning, and belief formation. The best-developed current theory of dopaminergic function is the “reward prediction error” hypothesis—that dopamine encodes the difference between the experienced and predicted “reward” of an event. We provide axiomatic foundations for this hypothesis to help bridge the current conceptual gap between neuroscience and economics. Continued research in this area of overlap between social and natural science promises to overhaul our understanding of how beliefs and preferences are formed, how they evolve, and how they play out in the act of choice.

Liquidation Values and the Credibility of Financial Contract Renegotiation: Evidence from U.S. Airlines*

Quarterly Journal of Economics 2008 123(4), 1635-1677
How do liquidation values affect financial contract renegotiation? While the “incomplete-contracting” theory of financial contracting predicts that liquidation values determine the allocation of bargaining power between creditors and debtors, there is little empirical evidence on financial contract renegotiations and the role asset values play in such bargaining. This paper attempts to fill this gap. We develop an incomplete-contracting model of financial contract renegotiation and estimate it using data on the airline industry in the United States. We find that airlines successfully renegotiate their lease obligations downward when their financial position is sufficiently poor and when the liquidation value of their fieet is low. Our results show that strategic renegotiation is common in the airline industry. Moreover, the results emphasize the importance of the incomplete contracting perspective to real-world financial contract renegotiation.

Exposing Corrupt Politicians: The Effects of Brazil's Publicly Released Audits on Electoral Outcomes*

Quarterly Journal of Economics 2008 123(2), 703-745
This paper uses publicly released audit reports to study the effects of disclosing information about corruption practices on electoral accountability. In 2003, as part of an anticorruption program, Brazil's federal government began to select municipalities at random to audit their expenditures of federally transferred funds. The findings of these audits were then made publicly available and disseminated to media sources. Using a data set on corruption constructed from the audit reports, we compare the electoral outcomes of municipalities audited before versus after the 2004 elections, with the same levels of reported corruption. We show that the release of the audit outcomes had a significant impact on incumbents' electoral performance, and that these effects were more pronounced in municipalities where local radio was present to divulge the information. Our findings highlight the value of having a more informed electorate and the role played by local media in enhancing political selection.

Cross-Border Returns Differentials*

Quarterly Journal of Economics 2008 123(4), 1495-1530
Using a monthly data set on the foreign equity and bond portfolios of U.S. investors and the U.S. equity and bond portfolios of foreign investors, we find that the returns differential for portfolio securities is far smaller than previously reported. Examining all U.S. claims and liabilities, we find that previous estimates of large differentials are biased upward. The bias owes to computing implied returns from an internally inconsistent data set of revised data; original data produce a much smaller differential. We also attempt to reconcile our findings with observed patterns of cumulated current account deficits, the net international investment position, and the net income balance. Overall, we find no evidence that the United States can count on earning substantially more on its claims than it pays on its liabilities.