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11
New NBER Working Papers This Week - August 15th, 2016
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For access to gated papers, make a request on /r/Scholar. Most papers can also be found, ungated, on their author's website.

Feel free to discuss any of these papers in the comments section below. Please refrain from reposting any of these papers to this sub.


Gated

Environmental and Energy Economics

The Consequences of Spatially Differentiated Water Pollution Regulation in China Zhao Chen, Matthew E. Kahn, Yu Liu, Zhi Wang

China’s environmental regulators have sought to reduce the Yangtze River’s water pollution. We document that this regulatory effort has had two unintended consequences. First, the regulation’s spatial differential stringency has displaced economic activity upstream. As polluting activity agglomerates upstream, more Pigouvian damage is caused downstream. Second, the regulation has focused on reducing one dimension of water pollution called chemical oxygen demand (COD). Thus, local officials face weak incentives to engage in costly effort to reduce other non-targeted but more harmful water pollutants such as petroleum, lead, mercury, and phenol.

Designing Nonlinear Price Schedules for Urban Water Utilities to Balance Revenue and Conservation Goals Frank A. Wolak

This paper formulates and estimates a household-level, billing-cycle water demand model under increasing block prices that accounts for the impact of monthly weather variation, the amount of vegetation on the household’s property, and customer-level heterogeneity in demand due to household demographics. The model utilizes US Census data on the distribution of household demographics in the utility’s service territory to recover the impact of these factors on water demand. An index of the amount of vegetation on the household’s property is obtained from NASA satellite data. The household-level demand models are used to compute the distribution of utility-level water demand and revenues for any possible price schedule. Knowledge of the structure of customer-level demand can be used by the utility to design nonlinear pricing plans that achieve competing revenue or water conservation goals, which is crucial for water utilities to manage increasingly uncertain water availability yet still remain financially viable. Knowledge of how these demands differ across customers based on observable household characteristics can allow the utility to reduce the utility-wide revenue or sales risk it faces for any pricing plan. Knowledge of how the structure of demand varies across customers can be used to design personalized (based on observable household demographic characteristics) increasing block price schedules to further reduce the risk the utility faces on a system-wide basis. For the utilities considered, knowledge of the customer-level demographics that predict demand differences across households reduces the uncertainty in the utility’s system-wide revenues from 70 to 96 percent. Further reductions in the uncertainty in the utility’s system-wide revenues in the, range of 5 to 15 percent, are possible by re-designing the utility’s nonlinear price schedules to minimize the revenue risk it faces given the distribution of household-level demand in its service territory.

Finance

Venture Capital Data: Opportunities and Challenges: Steven N. Kaplan, Josh Lerner

This paper describes the available data and research on venture capital investments and performance. We comment on the challenges inherent in those data and research as well as possible opportunities to do better.

Health Economics

Taking the Measure of a Fatal Drug Epidemic Christopher J. Ruhm

This analysis utilizes death certificate data from the Multiple Cause of Death (MCOD) files to better measure the specific drugs involved in drug poisoning fatalities. Statistical adjustment procedures are used to provide more accurate estimates, accounting for the understatement in death certificate reports resulting because no drug is specified in between one-fifth and one-quarter of cases. The adjustment procedures typically raise the estimates of specific types of drug involvement by 30% to 50% and emphasize the importance of the simultaneous use of multiple categories of drugs. Using these adjusted estimates, an analysis is next provided of drugs accounting for the rapid increase over time in fatal overdoses. The frequency of combination drug use introduces uncertainty into these estimates and so a distinction is made between any versus exclusive involvement of specific drug types. Many of the results are sensitive to the starting and ending years chosen for examination, with a key role of prescription opioids for analysis windows starting in 1999 but with other drugs, particularly heroin deaths, becoming more significant in more recent years and, again, with confirmatory evidence of the importance of simultaneous drug use.

International Trade and Investment

Optimal Domestic (and External) Sovereign Default Pablo D'Erasmo, Enrique G. Mendoza

Infrequent but turbulent episodes of outright sovereign default on domestic creditors are considered a “forgotten history” in Macroeconomics. We propose a heterogeneous-agents model in which optimal debt and default on domestic and foreign creditors are driven by distributional incentives and endogenous default costs due to the value of debt for self-insurance, liquidity and risk-sharing. The government's aim to redistribute resources across agents and through time in response to uninsurable shocks produces a rich dynamic feedback mechanism linking debt issuance, the distribution of government bond holdings, the default decision, and risk premia. Calibrated to Spanish data, the model is consistent with key cyclical co-movements and features of debt-crisis dynamics. Debt exhibits protracted fluctuations. Defaults have a low frequency of 0.93 percent, are preceded by surging debt and spreads, and occur with relatively low external debt. Default risk limits the sustainable debt and yet spreads are zero most of the time.

Labor Studies

Opening the Black Box of the Matching Function: the Power of Words Ioana Marinescu, Ronald Wolthoff

How do employers attract the right workers? How important are posted wages vs. other job characteristics? Using data from the leading job board CareerBuilder.com, we show that most vacancies do not post wages, and, for those that do, job titles explain more than 90% of the wage variance. Job titles also explain more than 80% of the across-vacancies variance in the education and experience of applicants. Finally, failing to control for job titles leads to a spurious negative elasticity of labor supply. Thus, our results uncover the previously undocumented power of words in the job matching process.

Charter Schools and Labor Market Outcomes Will S. Dobbie, Roland G. Fryer, Jr

We estimate the impact of charter schools on early-life labor market outcomes using administrative data from Texas. We find that, at the mean, charter schools have no impact on test scores and a negative impact on earnings. No Excuses charter schools increase test scores and four-year college enrollment, but have a small and statistically insignificant impact on earnings, while other types of charter schools decrease test scores, four-year college enrollment, and earnings. Moving to school-level estimates, we find that charter schools that decrease test scores also tend to decrease earnings, while charter schools that increase test scores have no discernible impact on earnings. In contrast, high school graduation effects are predictive of earnings effects throughout the distribution of school quality. The paper concludes with a speculative discussion of what might explain our set of facts.

The Economic Impact of Universities: Evidence from Across the Globe Anna Valero, John Van Reenen

We develop a new dataset using UNESCO source materials on the location of nearly 15,000 universities in about 1,500 regions across 78 countries, some dating back to the 11th Century. We estimate fixed effects models at the sub-national level between 1950 and 2010 and find that increases in the number of universities are positively associated with future growth of GDP per capita (and this relationship is robust to controlling for a host of observables, as well as unobserved regional trends). Our estimates imply that doubling the number of universities per capita is associated with 4% higher future GDP per capita. Furthermore, there appear to be positive spillover effects from universities to geographically close neighboring regions. We show that the relationship between growth and universities is not simply driven by the direct expenditures of the university, its staff and students. Part of the effect of universities on growth is mediated through an increased supply of human capital and greater innovation (although the magnitudes are not large). We find that within countries, higher historical university presence is associated with stronger pro-democratic attitudes.

The Effects of Pre-Trial Detention on Conviction, Future Crime, and Employment: Evidence from Randomly Assigned Judges Will Dobbie, Jacob Goldin, Crystal Yang

Over 20 percent of prison and jail inmates in the United States are currently awaiting trial, but little is known about the impact of pre-trial detention on defendants. This paper uses the detention tendencies of quasi-randomly assigned bail judges to estimate the causal effects of pre-trial detention on subsequent defendant outcomes. Using data from administrative court and tax records, we find that being detained before trial significantly increases the probability of a conviction, primarily through an increase in guilty pleas. Pre-trial detention has no detectable effect on future crime, but decreases pre-trial crime and failures to appear in court. We also find suggestive evidence that pre-trial detention decreases formal sector employment and the receipt of employment- and tax-related government benefits. We argue that these results are consistent with (i) pre-trial detention weakening defendants' bargaining position during plea negotiations, and (ii) a criminal conviction lowering defendants' prospects in the formal labor market.

Macro and Monetary Economics

On What States Do Prices Depend? Answers From Ecuador: Craig Benedict, Mario J. Crucini, Anthony Landry

In this paper, we argue that differences in the cost structure across sectors play an important role in the decision of firms to adjust their prices. We develop a menu-cost model of pricing in which retail firms intermediate trade between producers and consumers. An important facet of our analysis is that the labor-cost share of retail production differs across goods and services in the consumption basket. For example, the price of gasoline at the retail pump is predicted to adjust more frequently and by more than the price of a haircut due to the high volatility in wholesale gasoline prices relative to the wages of unskilled labor, even when both retailers face a common menu cost. This modeling approach allows us to account for some of the cross-sectional differences observed in the frequency of price adjustments across goods. We apply this model to Ecuador to take advantage of inflation variations and the rich panel of monthly retail prices.

The Elusive Costs of Inflation: Price Dispersion during the U.S. Great Inflation Emi Nakamura, Jón Steinsson, Patrick Sun, Daniel Villar

A key policy question is: How high an inflation rate should central banks target? This depends crucially on the costs of inflation. An important concern is that high inflation will lead to inefficient price dispersion. Workhorse New Keynesian models imply that this cost of inflation is very large. An increase in steady state inflation from 0% to 10% yields a welfare loss that is an order of magnitude greater than the welfare loss from business cycle fluctuations in output in these models. We assess this prediction empirically using a new dataset on price behavior during the Great Inflation of the late 1970's and early 1980's in the United States. If price dispersion increases rapidly with inflation, we should see the absolute size of price changes increasing with inflation: price changes should become larger as prices drift further from their optimal level at higher inflation rates. We find no evidence that the absolute size of price changes rose during the Great Inflation. This suggests that the standard New Keynesian analysis of the welfare costs of inflation is wrong and its implications for the optimal inflation rate need to be reassessed. We also find that (non-sale) prices have not become more flexible over the past 40 years.

Infrequent but Long-Lived Zero-Bound Episodes and the Optimal Rate of Inflation Marc Dordal-i-Carreras, Olivier Coibion, Yuriy Gorodnichenko, Johannes Wieland

Countries rarely hit the zero-lower bound on interest rates, but when they do, these episodes tend to be very long-lived. These two features are difficult to jointly incorporate into macroeconomic models using typical representations of shock processes. We introduce a regime switching representation of risk premium shocks into an otherwise standard New Keynesian model to generate a realistic distribution of ZLB durations. We discuss what different calibrations of this model imply for optimal inflation rates.

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