Particle Analysis for the Detection of Gunshot Residue (GSR) in Nasal Samples Using Scanning Laser Ablation and Inductively Coupled Plasma-Mass Spectrometry (SLA-ICPMS)

Currently, aluminum stub with carbon adhesive devices are used to collect inorganic gunshot residues (GSR) from the hands of a shooter. In an ideal shooting case, the gunshot particles do not persist for more than 2 h in the hands of the shooter, provided that the hands have not been washed. However, for forensic analysis and inference, the extended persistence of GSR would be desirable. This study investigates a novel GSR sampling and detection protocol. Sampling was performed in the nostrils using swab devices impregnated in ethylenediaminetetraacetic acid (EDTA). The GSRs persisted for longer periods in nasal mucus than on the hands, and particles were detected 6 h after shooting occurred. The analytical determination was conducted by scanning laser ablation-inductively coupled plasma-mass spectrometry (SLA-ICPMS) which enable the identification of the number of particles and their elemental composition. Seventeen isotope signals corresponding to ¹³C, ²⁰⁵Tl and 15 analytes that are usually associated with the composition of GSR residues were monitored: ²⁷Al, ²⁹Si, ³¹P, ³³S, ³⁵Cl, ³⁹K, ⁴⁴Ca, ⁵⁷Fe, ⁶⁰Ni, ⁶³Cu, ⁶⁶Zn, ¹¹⁸Sn, ¹²¹Sb, ¹³⁷Ba, and ²⁰⁸Pb. The SLA technique enabled the reduction of the swab analysis time to 40 min. The effectiveness of this methodology was evaluated with two types of firearms: a pistol and a shotgun. The results indicated that the methodology proposed for the analysis of the nasal GSR was effective and that it can improve or complement the forensic analyses and inferences presented in a court.     

Trajectories of Positive and Negative Behaviors from Early- to Middle-Adolescence

Although the positive youth development (PYD) model initially assumed inverse links between indicators of PYD and of risk/problem behaviors, empirical work in adolescence has suggested that more complex associations exist between trajectories of the two domains of functioning. To clarify the PYD model, this study assessed intraindividual change in positive and problematic indicators across Grades 5–10, and the links between these trajectories of development, among 2,516 participants from the 4-H Study of PYD (58.1% females; 64.9% European American, 7.0% African American, 12.3% Latino/a American, 2.6% Asian American or Pacific Islander, 1.8% Native American, 3.0% multiethnic-racial, and 8.4% with inconsistent race/ethnicity across waves). Results from person-centered analyses indicated that most youth clustered in the high trajectories of positive indicators and in the low trajectories of the negative ones. Consistent with past research, overlap between trajectories of positive and negative behaviors was found. These results suggest that theory and application need to accommodate to variation in the links between positive and problematic developmental trajectories.     

Tooth hop variability in human and nonhuman bone: Effect on the estimation of saw blade TPI

Forensic research has demonstrated that tooth hop (TH) is a valuable measurement from saw-cut bones as it can be used to estimate teeth-per-inch (TPI) of a saw used in postmortem dismemberment cases. However, error rates for TPI estimation are still under development and knowledge of how bone tissue affects TH measurements remains unclear. The purpose of this research was to investigate the effects of tissue variability through the use of different taxa on the accuracy and precision of TH measurements in the bone to estimate TPI of the blade. A total of 1766 TH measurements were analyzed from human, pig, and deer long bones cut by two 7 TPI saw blades of different tooth type. Fifty distance-between-teeth measurements before and after sawing were collected directly from each blade for comparison to bone-measured TH to assess potential effects of tooth wear on TH variability. ANOVA and F tests were used to compare mean TH and variance, respectively, by saw-species (i.e., crosscut-deer, rip-deer) and species groups (i.e., all deer, all pig), with significance determined at the p < 0.05 level. TH measurements were converted to usable TPI ranges, which would typically be presented in a forensic report. It is concluded that significant differences in TH (mm) do not necessarily reflect significant differences in associated TPI ranges of suspect blades. Forensic reports should report mean TPI ± 1.5–2.5 TPI while providing a sample size indicating number of TH measured rather than just number of cuts or cut surfaces examined.     

Human Milk in the Modern World: Breastfeeding and the Cult of the Dairy in Adam Bede and Tess of the d'Urbervilles

The lush dairy settings in George Eliot's Adam Bede and Thomas Hardy's Tess of the d'Urbervilles have traditionally been perceived as timeless,     

On the Legal Effects of Framework Decisions and Decisions: Directly Applicable,Directly Effective,Self‐executing,Supreme?

Abstract:  This article seeks to, first, clarify the meaning and scope of an array of 'legal-effect labels' which are often used interchangeably or in a loose way in the literature and, second, assess to what extent they can be applied to two kinds of very representative third pillar measures: Framework Decisions and Decisions, defined in Article 34(2) TEU. These 'labels' are 'directly applicable', 'directly effective', 'self-executing' and 'supreme'. The main conclusion is that these are interconnected concepts, in that the way in which we define one of them may prejudge the scope and/or the role played by others. This is particularly so in the case of direct effect, expressly excluded in the Treaty definition of Framework Decisions and Decisions. Arguably, our definition of direct effect will determine whether these measures can develop other effects—especially those emanating from the principle of supremacy (should we accept the latter as applicable to the third pillar). Further, the article argues that even if we adopt a narrow reading of direct effect that would allow for a hypothetical application of the principle of primacy to these third pillar measures, there are powerful reasons to reject the judicial extension of the Simmenthal duty to this area within the current framework of the TEU.     

Best Practices for Serving Traumatized Children and Families

This paper highlights the traumatic impact of child abuse and neglect upon children and adolescents who are commonly seen in court systems. In addition to describing prevalence rates of trauma exposure and psychological reactions among traumatized children, it addresses the need for judges and court personnel to work with children and families in a manner that is sensitive to their traumatic experiences and emphasizes the need for these children to receive the very best evidence‐based care available in order to help them more effectively cope and recover from trauma exposure. Cultural issues and model adaptations are covered in relation to the use of evidence‐based practices with children from various cultural and ethnic backgrounds. Specific recommendations are given to help judges and court personnel become better informed about the use of evidence‐based practices for treating child trauma, enabling them to respond more sensitively and appropriately in these cases.     

Variations in Behavior Problems of Preschoolers Exposed to Domestic Violence: The Role of Mothers’ Attunement to Children’s Emotional Experiences

The purpose of this study was to identify aspects of family relationships that may protect young children from the pathogenic effects of family violence. Using a sample of 30 preschool-age children whose mothers were physically abused by a partner, we investigated the associations between children’s externalizing and internalizing behavior problems and: (1) the quality of the mother–child relationship, and (2) mothers’ attunement to their child’s sad and angry emotions. Results indicated that clinician ratings of the mother–child relationship, and mothers’ attunement to their child’s experience of emotion each made a unique contribution to the prediction of children’s externalizing behavior. These relationships remained robust, even after taking the severity of domestic violence reported by mothers into consideration. Maternal attunement, however, did not mediate the relationship between marital conflict and children’s behavior problems. No significant link was found between children’s internalizing behavior and maternal attunement to their children’s sadness and anger. Additional findings suggested that mothers with a PTSD diagnosis tended to be less attuned to their child’s experience of sadness. This investigation was supported by grants from the Irving B. Harris Foundation, the Pinewood Foundation, the Miriam and Peter Haas Foundation, and a REAC Award from the University of California, San Francisco to the second author.