Relationship between blood and urine alcohol concentrations in apprehended drivers who claimed consumption of alcohol after driving with and without supporting evidence

For various reasons, many people suspected of driving under the influence of alcohol (DUIA) are not apprehended sitting behind the wheel, but some time after the driving. This gives them the opportunity to claim they drank alcohol after the time of driving or after they were involved in a road-traffic crash. Alleged post-offence drinking is not easy for the prosecution to disprove, which often means that the DUIA charge is dropped or the person is acquitted if the case goes to trial. The routine practice of sampling and measuring the concentration of alcohol in blood (BAC) and urine (UAC) and calculating urine/blood ratios (UAC/BAC) and the changes in UAC between two successive voids furnishes useful information to support or challenge alleged drinking after driving. We present here a retrospective case series of DUIA offenders (N = 40) in half of which there was supporting evidence of an after-drink (eye witness or police reports) and in the other half no such evidence existed apart from the suspect's admission. When there was supporting evidence of an after-drink, the UAC/BAC ratio for the first void was close to or less than unity (mean 1.04, median 1.08, range 0.54–1.21) and the UAC increased by 0.21 g/L (range 0.02–0.57) between the two voids. Without any supporting evidence of post-offence drinking the mean UAC/BAC ratio was 1.46 (range 1.35–1.93) for the first void, verifying that absorption and distribution of alcohol in all body fluids and tissues was complete. In these cases, the UAC between successive voids decreased by 0.25 g/L on average (range 0.10–0.49), indicating the post-absorptive phase of the BAC curve. Long experience from investigating claims of post-offence drinking leads us to conclude that in the vast majority of cases this lacks any substance and is simply a last resort by DUIA offenders to evade justice. Unless supporting evidence exists (eye witness, police reports, etc.) of post-offence drinking the courts are encouraged to ignore this defence argument.     

Addressing problems with traditional crime linking methods using receiver operating characteristic analysis

Purpose. Through an examination of serial rape data, the current article presents arguments supporting the use of receiver operating characteristic (ROC) analysis over traditional methods in addressing challenges that arise when attempting to link serial crimes. Primarily, these arguments centre on the fact that traditional linking methods do not take into account how linking accuracy will vary as a function of the threshold used for determining when two crimes are similar enough to be considered linked. Methods. Considered for analysis were 27 crime scene behaviours exhibited in 126 rapes, which were committed by 42 perpetrators. Similarity scores were derived for every possible crime pair in the sample. These measures of similarity were then subjected to ROC analysis in order to (1) determine threshold‐independent measures of linking accuracy and (2) set appropriate decision thresholds for linking purposes. Results. By providing a measure of linking accuracy that is not biased by threshold placement, the analysis confirmed that it is possible to link crimes at a level that significantly exceeds chance (AUC = .75). The use of ROC analysis also allowed for the identification of decision thresholds that resulted in the desired balance between various linking outcomes (e.g. hits and false alarms). Conclusions. ROC analysis is exclusive in its ability to circumvent the limitations of threshold‐specific results yielded from traditional approaches to linkage analysis. Moreover, results of the current analysis provide a basis for challenging common assumptions underlying the linking task.     

THE NEW BEGINNINGS PROGRAM FOR DIVORCING AND SEPARATING FAMILIES: MOVING FROM EFFICACY TO EFFECTIVENESS

This article describes a program of research on effectively transporting the New Beginnings Program (NBP), a university-tested prevention program for divorced families, to community settings. The four steps in this research are described: (1) selecting a community partner, (2) developing effective methods of engaging parents, (3) redesigning the NBP to be easily delivered with high quality and fidelity in community agencies, and (4) adapting the NBP to meet the needs of the full population of divorcing families. The article concludes with a discussion of plans for an effectiveness trial to evaluate the NBP when delivered in community settings.     

Understanding (Mis)classification Trends of Latin Americans in Fordisc 3.1: Incorporating Cranial Morphology,Microgeographic Origin,and Admixture Proportions for Interpretation

Assigning correct population affinity to a skeleton can contribute important information to an investigation—yet recent work highlights high error rates when classifying Latinos with a traditional tool, Fordisc 3.1 (FD3). Our study examines whether misclassification trends exist, and whether these can be used to infer population affinity. We examine the relationships among ancestry, geography, and FD3 misclassifications of Latinos using canonical variate analysis and unsupervised model‐based clustering of craniometrics. Northern Mexicans appear more strongly associated with FD3 references samples with elevated amounts of European ancestry (e.g., American Blacks and Whites), while Southern Mexicans are more strongly associated with FD3 reference samples with reduced amounts of European ancestry (e.g., Guatemalans and Native Americans). FD3 classifications revealed that Latinos exhibited lower posterior probabilities when compared to other common case demographics (Whites and African Americas), even when the classification was “correct.” We make recommendations for practitioner interpretation of FD3 reports for casework.     

Understanding Transnational Policy Flows in Security and Justice

This article examines the contribution of scholarly work on ‘policy transfer’ and related concepts to our knowledge of how far, and in what ways, particular policy ‘models’ of security and justice travel across national boundaries, and what might explain this phenomenon. The article begins by summarizing the key findings of extant empirical studies of cross‐national policy movement in the fields of crime, security, and justice. It then considers the normative dimension to debates about policy transfer, observing that much of the literature adopts a pessimistic position about the problematic nature of international policy movement in security and justice, and discusses some of the reasons for such pessimism. The article then reflects on ways in which normative principles could be applied to considerations of prospective policy transfer, and the implications for the broader possibilities for ‘progressive’ policy transfer in relation to crime, security, and justice.     

Legal skills and the SQE: confronting the challenge head on

Whether the teaching and assessment of practical legal skills and professional conduct should be focused at the academic or vocational stage of legal education has been considered numerous times, with recommendations made and varying degrees of implementation carried out. With the approval of the Solicitors Qualifying Examination being granted by the Legal Services Board this issue is once again being brought into focus. The end of the Legal Practice Course will result in the required compulsory teaching and assessment of core practical legal skills and professional conduct being removed from legal education. The question therefore is whether legal education should incorporate practical legal skills and professional conduct into teaching and assessment at the academic stage and, if so, how can this be achieved in a way that complements rather than distracts from the study of academic law. This study will consider the recommendations made in relation to practical legal skills and professional conduct over the last five decades and identify possible options for the embedding of practical legal skills and professional conduct in the law curriculum at undergraduate level.     

The world at their fingertips? The mental wellbeing of online distance-based law students

In recent years there has been an increased interest in student mental wellbeing within higher education. In terms of legal education, much of this has been focused upon the United States (US) and Australia, with a lack of United Kingdom (UK)-based empirical data available. Although there is now extensive provision of online distance learning options available to UK (and other) law students, there is a notable lack of research into the possible challenges which are specific to this form of tertiary offering. This paper seeks to contribute to the development of research in this area by reporting upon, and analysing, preliminary data gathered from an empirical study of the mental wellbeing of online distance learning law students.     

Effects of Human Electro‐Muscular Incapacitation (HEMI) Devices on Cardiovascular Changes in Anesthetized Swine as Measured by Transesophageal Echocardiography (TEE)

The abundance of, and reliance upon, human electro‐muscular incapacitation (HEMI) devices, especially in law enforcement, has generated scrutiny and examination of these technologies. The purpose of this study was to examine cardiovascular effects resulting from typical (5 sec) and longer activation (20 sec) HEMI applications studying myocardial function and peripheral vascular system using a combination of invasive cardiovascular catheters and transesophageal echocardiography (TEE). Six healthy swine (Sus scrofa) 3–5 months in age and weighing between 60 and 86 kg were anesthetized and exposed to the TASER Model X26 waveform while transesophageal echocardiography was performed. Stroke volume was shown to statistically decrease during HEMI application indicating an increase in systemic vascular resistance, but HEMI application did not result in myocardial dysfunction (“cardiac stunning”).     

Detection of Brodifacoum and other Rodenticides in Drug Mixtures using Thermal Desorption Direct Analysis in Real Time Mass Spectrometry (TD‐DART‐MS)

In recent months, there has been increased reporting of seized drug and toxicology cases containing rodenticides, the active ingredient in rat poisons. Seeing as rodenticides are not scheduled substances, they are not commonly screened for in seized drug analysis. This work investigates the use of TD‐DART‐MS for the simultaneous detection of rodenticides and drugs. Six rodenticides were evaluated, an optimal method was established, and limits of detection in the tens of nanograms were calculated. Additional studies highlight that detection at less than 1% by weight in mixtures with AB‐FUBINACA, cocaine, heroin, or methamphetamine was possible. This work presents an optimized method for detection of these compounds, allowing for the simultaneous detection of drugs and rodenticides, providing drug chemists with a tool for rapid identification of these compounds for forensic or public health purposes.