The Wandering Officer

“Wandering officers” are law-enforcement officers fired by one department, sometimes for serious misconduct, who then find work at another agency. Policing experts hold disparate views about the extent and character of the wandering-officer phenomenon. Some insist that wandering officers are everywhere—possibly increasingly so—and that they’re dangerous. Others, however, maintain that critics cherry-pick rare and egregious anecdotes that distort broader realities. In the absence of systematic data, we simply do not know how common wandering officers are or how much of a threat they pose, nor can we know whether and how to address the issue through policy reform. In this Article, we conduct the first systematic investigation of wandering officers and possibly the largest quantitative study of police misconduct of any kind. We introduce a novel data set of all 98,000 full-time law-enforcement officers employed by almost 500 different agencies in the State of Florida over a thirty-year period. We report three principal findings. First, in any given year during our study, an average of just under 1,100 officers who were previously fired—three percent of all officers in the State—worked for Florida agencies. Second, officers who were fired from their last job seem to face difficulty finding work. When they do, it takes them a long time, and they tend to move to smaller agencies with fewer resources in areas with slightly larger communities of color. Interestingly, though, this pattern does not hold for officers who were fired earlier in their careers. Third, wandering officers are more likely than both officers hired as rookies and those hired as veterans who have never been fired to be fired from their next job or to receive a complaint for a “moral character violation.” Although we cannot determine the precise reasons for the firings, these results suggest that wandering officers may pose serious risks, particularly given how difficult it is to fire a police officer. We consider several plausible explanations for why departments nonetheless hire wandering officers and suggest potential policy responses to each

Decriminalizing Delinquency: The Effect of Raising the Age of Majority on Juvenile Recidivism

In the last decade, a number of states have expanded the jurisdiction of their juvenile courts by increasing the maximum age to 18. Proponents argue that these expansions reduce crime by increasing access to the beneficial features of the juvenile justice system. Critics counter that the expansions risk increasing crime by reducing deterrence. In 2010, Illinois raised the maximum age for juvenile court for offenders who commit a misdemeanor. By examining the effect of this law on juvenile offenders in Chicago, this paper provides the first empirical estimates of the consequences of recent legislative activity to raise the age of criminal majority. Applying a difference-in-differences design with multiple control groups, we find little evidence of an effect. Our results suggest that—contrary to the expectations of both advocates and opponents— increasing the maximum age for juvenile court does not affect juvenile recidivism

The Fragile Promise of Open-File Discovery

Under traditional rules of criminal discovery, defendants are entitled to little prosecutorial evidence and are thus forced to negotiate plea agreements and prepare for trial in the dark In an effort to expand defendants\u27 discovery rights, a number of states have recently enacted open-file statutes, which require the government to share the fruits of its investigation with the defense. Legal scholars have widely supported these reforms, claiming that they level the playing field and promote judicial efficiency by decreasing trials and speeding up guilty pleas. But these predictions are based largely on intuition and anecdotal data without extended theoretical analysis or systematic empirical testing. This Article aims to fill both of these gaps in the literature. It begins by developing a dynamic theory of the effects of open-file on the behavior of police, prosecutors, defense attorneys, and defendants. The theory leads to the conclusion that the anticipated effects of open-file are fragile and contingent on a range of extrinsic institutional circumstances, including the distribution of cases in which defendants over- and under-estimate the strength of the government\u27s evidence, the availability of public defense funding, and the adaptive behavior of police and prosecutors in the collection of evidence and assembly of the file. The Article then examines the effects of open-file empirically using data from two states that have expanded their discovery statutes in the last decade. It finds relatively little evidence that defendants fared significantly better in terms of charging, plea bargaining, and sentencing or that the trial rate fell as a result of the legislation. If the effects of open-file are indeed so fragile and contingent, then it may offer little utility as a standalone fix. We need, instead, to find the will to integrate discovery legislation into a package of reforms that increase funding for indigent defense and that establish stronger enforcement mechanisms to ensure the government complies with its discovery obligations

Strategic Publication

Under the standard account of judicial behavior when a panel of appellate court judges cannot agree on the outcome of a case, the panel has two options. First, it can publish a divided decision with a majority opinion and a dissent. Panels usually do not take this route because a dissent dramatically increases the probability of reversal. The second and more common option is for the panel to bargain and compromise over the reasoning of the decision and then publish a unanimous opinion. This Article argues that a divided panel has a third option: strategic publication. The panel can choose not to publish any opinion at all and thus sap its decision of precedential weight and insulate it from further scrutiny by higher courts. This Article also reports the results of a novel empirical analysis of case-level data on published and unpublished decisions in one federal circuit court. While it finds little empirical evidence that majority-Democrat panels in the sample engage in strategic publication, it finds evidence that majority-Republican panels do. The Article concludes by offering several policy proposals to diminish strategic publication by separating the publication decision from judicial negotiations over the merits

Project Safe Neighborhoods in Chicago: Looking Back a Decade Later

Project Safe Neighborhoods (PSN) is a federally funded initiative that brings together federal, state, and local law enforcement to reduce gun violence in urban centers. In Chicago, PSN implemented supply-side gun policing tactics, enhanced federal prosecution of gun crimes, and notification forums warning offenders of PSN’s heightened criminal sanctions. Prior evaluations provide evidence that PSN initiatives have reduced crime in the first few years of their operation. But over a decade after the program was established, we still know little about whether these effects are sustained over an extended period of time. This Article examines PSN Chicago, an anti-violence program in operation since 2002. Consistent with a previous evaluation, we find that several program components were associated with reductions in violence in the initial target areas. These associations, however, are concentrated in the first few years of the intervention. We also examine the effect of PSN in several subsequent expansion areas and find no detectable effects. We suggest that the effects of PSN were diluted as the program expanded to larger areas of the city without an increase in funding or resources. Still, we recommend that future research consider PSN’s strategies in Chicago that appeared effective in the early years and leverage those insights for future programs

The Effect of Privately Provided Police Services on Crime

Research demonstrates that police reduce crime. The implication of this research for investment in a particular form of extra police services, those provided by private institutions, has not been rigorously examined. We capitalize on the discontinuity in police force size at the geographic boundary of a private university police department to estimate the effect of the extra police services on crime. Extra police provided by the university generate approximately 45-60 percent fewer crimes in the surrounding neighborhood. These effects appear to be similar to other estimates in the literature

Mutations in DNAH1, which encodes an inner arm heavy chain dynein, lead to male infertility from multiple morphological abnormalities of the sperm flagella.

International audienceTen to fifteen percent of couples are confronted with infertility and a male factor is involved in approximately half the cases. A genetic etiology is likely in most cases yet only few genes have been formally correlated with male infertility. Homozygosity mapping was carried out on a cohort of 20 North African individuals, including 18 index cases, presenting with primary infertility resulting from impaired sperm motility caused by a mosaic of multiple morphological abnormalities of the flagella (MMAF) including absent, short, coiled, bent, and irregular flagella. Five unrelated subjects out of 18 (28%) carried a homozygous variant in DNAH1, which encodes an inner dynein heavy chain and is expressed in testis. RT-PCR, immunostaining, and electronic microscopy were carried out on samples from one of the subjects with a mutation located on a donor splice site. Neither the transcript nor the protein was observed in this individual, confirming the pathogenicity of this variant. A general axonemal disorganization including mislocalization of the microtubule doublets and loss of the inner dynein arms was observed. Although DNAH1 is also expressed in other ciliated cells, infertility was the only symptom of primary ciliary dyskinesia observed in affected subjects, suggesting that DNAH1 function in cilium is not as critical as in sperm flagellum

Printed-Sensor-on-Chip devices – Aerosol jet deposition of thin film relative humidity sensors onto packaged integrated circuits

In this paper we report on the development of an aerosol jet printed sensing platform integrating elements of silicon and printed electronics. To demonstrate the technology, thin film humidity sensors have been fabricated over the top surface and sides of pre-packaged integrated circuits using a combination of direct-write aerosol jet deposition and drop-casting. The resistive based sensor consists of an aerosol jet deposited interdigitated nano-particle silver electrode structure overlaid with a thin film of Nafion® acting as a humidity sensitive layer. The fabricated sensor displayed a strong response to changes in relative humidity over the tested range (40% RH to 80% RH) and showed a low level of hysteresis whilst undergoing cyclic testing. The successful fabrication of relative humidity sensors over the surface and pins of a packaged integrated circuit demonstrates a new level of integration between printed and silicon based electronics − leading to Printed-Sensor-on-Chip devices. Whilst demonstrated for humidity, the proposed concept is envisaged to work as a platform for a wide range of applications, from bio-sensing to temperature or gas monitoring