Working Papers
Managing Pretrial Misconduct: An Experimental Evaluation of HOPE Pretrial
Goldman School of Public Policy Working Paper: January 2019
In this project we evaluate the application of the case management and treatment delivery practices developed under the HOPE probation strategy to pretrial individuals who are conditionally released from jail subject to criminal justice supervision. In the jurisdiction we study (Honolulu, Hawaii), defendants on supervised release are typically monitored by pretrial officers located at the county jail. The revocation of supervised release occurs once a defendant has failed to comply several times with a set of pre-specified conditions, including but not necessarily limited to refraining from drug use and additional criminal activity, maintaining contact with the assigned pretrial officers, and making all scheduled court dates. The intervention we evaluate applies random drug testing in conjunction with swift, certain, consistent, and proportionate sanctions to pretrial misconduct. That is to say, misconduct is met with quickly administered arrest and re-incarceration, yet subsequent jail spells are proportionate to the seriousness of the violation. The intervention also includes drug treatment interventions for those who repeatedly fail drug tests (or who request treatment services) and direct interaction following each violation with the presiding judge of a court devoted to HOPE probation as well as HOPE pretrial defendants.
Between September 2014 and August 2016, felony defendants who failed to make bail and who were granted supervised release were randomly assigned to either status-quo pretrial services or to the HOPE pretrial treatment group. We use administrative data on drug tests, revocations, supervised release case dispositions, and criminal history records to assess whether applying HOPE to individuals on pretrial supervised release impacts various measures of pretrial misconduct, criminal case disposition, and post-disposition arrests. Our findings are the following:
(1) HOPE treatment group members experience more pretrial supervised release revocations most of which are better characterized as modifications but fewer permanent revocations ending the supervised release term relative to control group members.
(2) Treatment under HOPE pretrial reduced the proportion of drug tests resulting in failure. The drug test failure rate for treatment group members was roughly 21 to 30 percent lower than the comparable failure rate observed for the control group with the difference statistically significant.
(3) HOPE treatment did not impact total jail days served between the supervised release date and the disposition date for the criminal case. However, treatment group members serve jail days earlier in their supervised release term while control group members serve more jail days later.
(4) Average total pretrial arrests occurring after supervised release does not differ significantly between the treatment and control group. However, treatment group members are significantly and substantially less likely to be arrested with a new criminal charge.
(5) Treatment group members are less likely to be convicted and less likely to be convicted for a felony.
(6) We do not find statistically significant effects of treatment on post-disposition arrest outcomes.
Spatial Correlation, Trade, and Inequality: Evidence from the Global Climate
Goldman School of Public Policy Working Paper (January 2019)
This paper shows that greater global spatial correlation of productivities can increase crosscountry welfare dispersion by increasing the correlation between a country’s productivity and its gains from trade. We causally validate this general-equilibrium prediction using a global climatic phenomenon as a natural experiment. We find that gains from trade in cereals over the last halfcentury were larger for more productive countries and smaller for less productive countries when cereal productivity was more spatially correlated. Incorporating this general-equilibrium effect into a projection of climate-change impacts raises projected international inequality, with higher welfare losses across most of Africa.
Inequality of Educational Opportunity? Schools as Mediators of the Intergenerational Transmission of Income
Goldman School of Public Policy Working Paper (January 2019)
Intergenerational income transmission varies across commuting zones (CZs). I investigate whether children’s educational outcomes help to explain this variation. Differences among CZs in the relationship between parental income and children’s human capital explain only one-ninth of the variation in income transmission. A similar share is explained by differences in the return to human capital. One-third reflects earnings differences not mediated by human capital, and 40% reflects differences in marriage patterns. Intergenerational mobility appears to reflect job networks and the structure of local labor and marriage markets more than it does the education system.
Response to Comment by Dench and Joyce on Hoynes, Miller and Simon AEJP 2015
Goldman School of Public Policy Working Paper
The Augmented Synthetic Control Method
Goldman School of Public Policy Working Paper (November 2018)
The synthetic control method (SCM) is a popular approach for estimating the impact of a treatment on a single unit in panel data settings. The “synthetic control” is a weighted average of control units that balances the treated unit’s pre-treatment outcomes as closely as possible. The curse of dimensionality, however, means that SCM does not generally achieve exact balance, which can bias the SCM estimate. We propose an extension, Augmented SCM, which uses an outcome model to estimate the bias due to covariate imbalance and then de-biases the original SCM estimate, analogous to bias correction for inexact matching. We motivate this approach by showing that SCM is a (regularized) inverse propensity score weighting estimator, with pre-treatment outcomes as covariates and a ridge penalty on the propensity score coefficients. We give theoretical guarantees for specific cases and propose a new inference procedure. We demonstrate gains from Augmented SCM with extensive simulation studies and apply this framework to canonical SCM examples. We implement the proposed method in the new augsynth R package.
Waterfront Contribution: A New Finance Paradigm for Cleanup of Contaminated Sediments
Goldman School of Public Policy Working Paper (November 2018)
Contaminated sediments pose significant ecological and health threats in ports and harbors around the world. Yet there is surprisingly little progress towards cleanup in most countries. The U.S. Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA or Superfund law) facilitates cleanup projects but they often suffer lengthy delays nonetheless. Participants debate relative responsibility over cost shares. Project finance is often insufficient, in part because resources are diverted by adversarial legalism (Spadaro and Rosenthal 2003, Kagan 2001).
Technologies of sediment remediation (e.g., precision dredging, engineered cap placement, natural attenuation) can now address even the most significant contamination. These innovations allow increasing economies of operation and simplification of remediation design. Applying these technologies in risk-based proportions has produced significant successes, but far too few given the enormity of the challenge worldwide. Without innovations in funding, improved project coordination, and coherent waterfront planning, greater progress will remain difficult to achieve.
We analyze relationships between waterway cleanup of contaminated sediments and waterfront redevelopment. Using examples from North America, we evaluate possible changes in funding paradigms that, if implemented, could accelerate reclamation and remediation. We question the efficacy of the 100-percent-polluter-pays model currently employed in cleanups under the Superfund program and state-equivalent models. Despite its compensatory logic, polluter-pays has difficulty securing polluters’ participation and attributing proportions of contamination to original sources.
Further, historic polluters often lack roots in the present-day community, aiming primarily to minimize their financial exposure. By contrast, longer-term interests in waterways and on the waterfront—e.g. municipal governments, port authorities, and community organizations—can play leadership roles via planning, development regulation, and uplands remediation. Though these entities ought bear no more than their fair share of the costs, they should help coordinate the process whenever possible, given their naturally occurring stakes in cleanup and revitalization.
We propose new roles for cleanup authorities and new structures in project-finance. Tax-increment investment and other approaches can salvage public value and limit windfalls for speculators. Better funding and planning methods enhance local control over these projects and their outcomes. Importantly, new approaches can reduce levels of community displacement, as property values rise when cleanup succeeds.
Without such coordination of waterway-waterfront cleanup and redevelopment in the public interest, significant opportunities are lost. Through enlightened practices, perhaps spurred by positive regulation and negotiated solutions emphasizing local constituencies, greater numbers of effective cleanup projects providing meaningful community benefits become possible.
Keywords: Redevelopment, Municipality, Port Authority, Superfund, Funding
This paper will be presented at the WODCON XXII meetings in Shanghai, China in April of 2019.
Using Non-Linear Budget Sets to Estimate Extensive Margin Responses: Method and Evidence from the Social Security Earnings Test
Goldman School of Public Policy Working Paper (June 2018)