The Effects of Tulsa's Pre‐K Program on Middle School Student Performance

As states have upgraded their commitment to pre‐K education over the past two decades, questions have arisen. Critics argue that program effects are likely to fade out or disappear over time, while supporters contend that program effects are likely to persist under certain conditions. Using data from Tulsa Public Schools, three neighboring school districts, and the state of Oklahoma, and propensity score weighting, we estimate the effects of Tulsa's universal, school‐based pre‐K program on multiple measures of academic progress for middle school students. We find enduring effects on math achievement test scores, enrollment in honors courses, and grade retention for students as a whole, and similar effects for certain subgroups. We conclude that some positive effects of a high‐quality pre‐K program are discernible as late as middle school.     

Analytic authoritarianism and Nigeria

Despite two decades of democratisation and some recent liberalisation in North Africa, dictatorships linger around the world. New research on comparative authoritarianism questions personal rule and studies a range of dependent variables, such as why dictators sometimes provide public goods. This ‘analytic authoritarian’ literature emphasises collective governance and explores the institutional basis of policy control. Nigeria's military regimes between 1966 and 1998 provide examples of how military factions and subnational actors can impose transaction costs on authoritarian policy processes. These alternative centres of policy control limited the ability of dictators to unilaterally advance their policy preferences on questions relating to federalism and transition plans. The article concludes by linking this analysis to Nigeria's lingering legacies of authoritarianism and the institutional basis of its 1999 transition.     

Attrition in the RAND Health Insurance Experiment: a response to Nyman

In a prior article in this journal, John Nyman argues that the effect on health care use and spending found in the RAND Health Insurance Experiment is an artifact of greater voluntary attrition in the cost-sharing plans relative to the free care plan. Specifically, he speculates that those in the cost-sharing plans, when faced with a hospitalization, withdrew. His argument is implausible because (1) families facing a hospitalization would be worse off financially by withdrawing; (2) a large number of observational studies find a similar effect of cost sharing on use; (3) those who left did not differ in their utilization prior to leaving; (4) if there had been no attrition and cost sharing did not reduce hospitalization rates, each adult in each family that withdrew would have had to have been hospitalized once each year for the duration of time they would otherwise have been in the experiment, an implausibly high rate; (5) there are benign explanations for the higher attrition in the cost-sharing plans. Finally, we obtained follow-up health-status data on the great majority of those who left prematurely. We found the health-status findings were insensitive to the inclusion of the attrition cases.     

Measuring the accuracy of facial approximations: a comparative study of resemblance rating and face array methods

The success of facial approximation is thought to depend, at least in part, upon the "accuracy" of the constructed face. However, methods of accuracy assessment are varied and this range in methods may be responsible for the disparate results reported in the literature. The aim of this study was to determine if the accuracy results of one facial approximation were comparable across two different assessment methods (resemblance ratings and simultaneous face array tests using unfamiliar assessors) and if resemblance ratings co-varied with recognition responses. True-positive recognition performance from the facial approximation was poor (21%) while resemblance scores using the same facial approximation were moderately high (3 out of 5 on a five-point scale). These results are not, therefore, consistent and indicate that either different variables are being evaluated by the methods, or the same variable is being examined but with different weight/calibration. Further resemblance ratings tests of the facial approximation to three foil faces from the face array revealed that resemblance scores were similar irrespective of which face was compared, and did not closely correspond with the degree of recognition performance. This was especially the case for isolated comparisons of single faces to the facial approximation. Collectively, these results indicate that resemblance ratings are: (i) insensitive measures of a facial approximation's accuracy; and (ii) inconsistent with results of unfamiliar simultaneous face-array recognition results. These data suggest that familiar and unfamiliar recognition tests should be given increased weight in contrast to current resemblance rating tests.     

Frozen: Thawing and Its Effect on the Postmortem Microbiome in Two Pediatric Cases,

Previous postmortem microbiome studies have focused on characterizing taxa turnover during an undisturbed decomposition process. How coexisting conditions (e.g., frozen, buried, burned) affect the human microbiome at the time of discovery is less well understood. Microbiome data were collected from two pediatric cases at the Wayne County Medical Examiner in Michigan. The bodies were found frozen, hidden in a freezer for an extended time. Microbial communities were sampled from six external anatomic locations at three time points during the thawing process, prior to autopsy. The 16S rRNA V4 gene amplicon region was sequenced using high‐throughput sequencing (Illumina MiSeq). Microbial diversity increased, and there was a distinct shift in microbial community structure and abundance throughout the thawing process. Overall, these data demonstrate that the postmortem human microbiome changes during the thawing process, and have important forensic implications when bodies have been substantially altered, modified, and concealed after death.     

Conscience in public administration: More than just a chirping cricket?

The policy and practice of public administration are caught between two seemingly incommensurate goals. Public servants are expected to be responsible to the oversight and control of democratically elected governments, yet, as the policy space becomes more complex, are forced to exercise more judgment and discretion in their responsibilities. Individual, collective, and professional conscience is motivated across this spectrum of challenges. This article explores the concepts of discretion and conscience in theory and practice in the Canadian context. It offers insights into how conscience can, and perhaps must, be both accommodated and supported more appropriately in the practice of 21^st‐century public administration and service. At root, we argue that an array of strategies and approaches may help to build relational reciprocity to a broader set of norms that are necessary for efficient and effective governance.     

Commotio cordis: A case report of a fatal blow

Commotio cordis secondary to a blunt blow to the chest wall can result in ventricular fibrillation and sudden death in children. While it is commonly reported in adolescents during sporting activities, it may result from non-accidental trauma especially in infants and younger children. We report a case of a 6-month-old baby boy who presented to the emergency department in cardiac arrest. The patient's hospital records, postmortem imaging, and the autopsy results were reviewed. External examination of the infant did not reveal any evidence of trauma. Postmortem imaging revealed multiple healing posterior rib fractures and a metaphyseal corner fracture, both considered fractures highly specific for physical abuse. The autopsy revealed a structurally normal heart with no microscopic abnormalities. The infant's father confessed to hitting the child on the chest after which the child became unresponsive. Given the constellation of postmortem imaging and autopsy findings in addition to the father's confession, the child's death was ruled as a homicide secondary to commotio cordis. Since there are no structural and microscopic abnormalities in the heart autopsy in cases of commotio cordis, timely on-scene investigation and a thorough investigation regarding the mechanism of injury are required to make this diagnosis. Early identification of non-accidental trauma is crucial and can prevent further abuse in other siblings.     

Future of South Korea–Japan Relations: Decoupling or Liberal Discourse

South Korea–Japan relations are at their lowest point in decades, as colonial era disputes flare once again. Most pundits argue that the South Korean public is strongly united against Japan. We argue that South Korean elites are sharply divided over how to manage the crisis; this division is starting to impact how South Koreans understand colonial era narratives; and, long-term, bilateral relations depend on how these growing divisions play out. Despite state censorship, a rising counter-narrative in South Korea challenges the dominant, Manichaean, anti-Japanese one. For the first time, Korea and Japan have a realistic chance of reconciling based on liberal public discourse and a nuanced, empirically based understanding of history.