Do Precinct Characteristics Influence Stop-and-Frisk in New York City? A Multi-Level Analysis of Post-Stop Outcomes

Between 2003 and 2014, the majority of people stopped under the New York Police Department’s policy of stop-and-frisk were non-white. This led to charges of racial bias. This paper examines whether biases persist after a stop occurs. Data on 587,479 stops from 2010 are analyzed to examine differences by race for six outcomes: use of force, being frisked, being searched, being issued a summons, being arrested, and yielding a productive stop. Multilevel logistic models are then estimated to examine the effect of precinct-level residential racial composition and crime rates on the odds of the six outcomes. Results show that blacks and Latinos are more likely to be frisked and to have force used against them; however, this risk depends on precinct-level characteristics. A supplementary analysis of stops from 2014 shows that decreased reliance on stop-and-frisk reduces the odds of force being used against blacks and Latinos to non-significance.     

Forensic Analysis of Explosives Using Isotope Ratio Mass Spectrometry (IRMS)—Part 2: Forensic Inter-Laboratory Trial: Bulk Carbon and Nitrogen Stable Isotopes in a Range of Chemical Compounds (Australia and New Zealand)

Abstract:  Comparability of data over time and between laboratories is a key issue for consideration in the development of global databases, and more broadly for quality assurance in general. One mechanism that can be utilized for evaluating traceability is an inter-laboratory trial. This paper addresses an inter-laboratory trial conducted across a number of Australian and New Zealand isotope ratio mass spectrometry (IRMS) laboratories. The main objective of this trial was to determine whether IRMS laboratories in these countries would record comparable values for the distributed samples. Four carbon containing and four nitrogen containing compounds were distributed to seven laboratories in Australia and one in New Zealand. The laboratories were requested to analyze the samples using their standard procedures. The data from each laboratory was evaluated collectively using International Standard ISO 13528 ( Statistical methods for use in proficiency testing by inter-laboratory comparisons ). "Warning signals" were raised against one participant in this trial. "Action signals" requiring corrective action were raised against four participants. These participants reviewed the data and possible sources for the discrepancies. This inter-laboratory trial was successful in providing an initial snapshot of the potential for traceability between the participating laboratories. The statistical methods described in this article could be used as a model for others needing to evaluate stable isotope results derived from multiple laboratories, e.g., inter-laboratory trials/proficiency testing. Ongoing trials will be conducted to improve traceability across the Australian and New Zealand IRMS community.     

Mitochondrial DNA control region variation in a population sample from Hong Kong, China

Entire mitochondrial control region sequences were generated from 377 unrelated individuals from urban Hong Kong. In line with other control region datasets from China, the sample from Hong Kong exhibited significant genetic diversity that was reflected in a random match probability of 0.19% and a mean pairwise difference of 13.14. A total of 305 haplotypes were identified, of which 262 were unique. These sequences will be made publicly available to serve as forensic mtDNA reference data for China.     

Lessons learned from inter-laboratory studies of carbon isotope analysis of honey

Forensic application of carbon isotope ratio measurements of honey and honey protein to investigate the degree of adulteration with high fructose corn syrup or other C₄ plant sugars is well established. These measurements must use methods that exhibit suitable performance criteria, particularly with regard to measurement uncertainty and traceability – low levels of adulteration can only be detected by methods that result in suitably small measurement uncertainties such that differences of 1‰ or less can be reliably detected. Inter-laboratory exercises are invaluable to assess the state-of-the art of measurement capabilities of laboratories necessary to achieve such performance criteria. National and designated metrology institutes from a number of countries recently participated in an inter-laboratory assessment (CCQM-K140) of stable carbon isotope ratio determination of bulk honey. The same sample material was distributed to a number of forensic isotope analysis laboratories that could not participate directly in the metrological comparison. The results from these studies have demonstrated that the majority of participants provided isotope delta values with acceptable performance metrics; that all participants ensured traceability of their results; and that where measurement uncertainties were reported; these were fit-for-purpose. A number of the forensic laboratories only reported precision rather than full estimates of measurement uncertainty and this was the major cause of the few instances of questionable performance metrics. Reporting of standard deviations in place of measurement uncertainties is common practice outside metrology institutes and the implications for interpretations of small differences in isotopic compositions are discussed. The results have also highlighted a number of considerations that are useful for organisers of similar inter-laboratory studies in the future.     

Forensic psychiatric experiences,stigma, and self-concept: a mixed-methods study

This study used a mixed-methods approach to investigate stigma experiences and self-concepts of individuals with both mental illness and criminal histories. The full sample of participants completed self-report measures of self-concept related to mental illness, race, and criminal history, and a brief qualitative self-concept measure. A subsample of participants completed semi-structured interviews, which were analyzed for content domains. Analyses suggested that several aspects of self-concept related to responses on stigma measures. Participants who identified their own styles of acting, feeling, and thinking tended to exhibit less mental illness self-stigma. Qualitative interview findings suggested that the majority of participants described stigma experiences related to mental illness, race, and criminal history, and these stigmatized identities negatively influenced one another. Conclusions review how stigmatized identities can intersect in powerful ways for individuals with mental illness and histories of criminal offending, and discuss implications for future research and clinical practice.     

Assault in prison and assault in prison psychiatric treatment

Studies have described measures associated with assault in the community, but few have identified measures associated with assault in prison or prison psychiatric treatment. In this study, prison assault histories and assaults while in prison psychiatric treatment for 222 randomly selected male inmates were evaluated. Using record reviews, interviews, neuropsychological, Rorschach, and psychopathy measures, risk factors for assault in prison and in prison psychiatric treatment were identified. Youth Authority placement, inhalant use, antisocial lifestyle, neurological injury, neuropsychological impairment, and higher PCL-R Factor II ratings were associated with assault in prison. Absence of major mental disorder, neurological impairment, or psychotic thinking, but presence of psychopathy was associated with assault in prison psychiatric treatment. In identifying risk for violence, the importance of (1) the context in which violence occurs; (2) the need for clear admission criteria for prison psychiatric treatment; and (3) the need to develop risk assessments that are specific to prison environments are emphasized.     

Comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC x GC-TOFMS) for drug screening and confirmation

Comprehensive two-dimensional gas chromatography (GC x GC) is applied to analysis of drug standard mixtures containing 78 drugs of interest in forensic samples. For this study, underivatised drugs were employed. While several of the drugs were not detected at the low concentrations employed in the samples, most could be satisfactorily assigned their first and second dimension retentions in the GC x GC retention plane. For this study, time-of-flight mass spectrometry (TOFMS) detection was used. The enhanced separation possible in GC x GC is demonstrated, and typical linearity and apparatus precision are shown for tramadol, diazepam, olanzapine and desipramine using selected qualifier ions. Mass spectral library search quality for the detection of drugs in a selection of authentic forensic cases, along with retention position in the 2D retention plane, is used to support positive identification of the presence of the drugs. The analysis of 'difficult' drugs paracetamol and phenytoin is shown to produce anomalous chromatographic peak shape in the 2D plane, whereas most drugs gave acceptable peak shapes. The GC x GC technique was applied to screening drugs in forensic samples, with either flame ionisation (FID) or TOFMS detection, and compared favourably with conventional single column GC-MS analysis when tested for diazepam in an authentic forensic study.     

The Just War Tradition and the Moral Character of Nuclear Deterrence

The paper begins with a brief conceptualization of deterrence as a category of state institutionalized threats which are characterized by the risk of use of nuclear weapons. Using this as justification, it continues with a discussion of the principles of thejust war tradition and, in the third section, examines a specific attempt to describe an alternative, more morally acceptable, structure of deterrence. The shortcomings of this attempt provide the springboard for a discussion of an alternative conceptualization of deterrence which moves beyond the bounds of the tradition's obsession with intent as the source of ethical evaluations of deterrence. The philosophical limits of the tradition, particularly its lack of a theory of rights, are finally discussed.