Fate and Behavior of Gunshot Residue: Recreational Shooter Vehicle Distribution

The susceptibility for recreational shooters to transfer gunshot residue (GSR) to both the interior and exterior of a vehicle is investigated. A comprehensive sampling protocol was used to assess the most likely areas of GSR transfer from recreational shooter contact, such as the steering wheel and the area, the firearms were stored (the trunk). Up to 315 characteristic GSR, particles were found in several locations throughout the interior of a vehicle. As many as 876 characteristic particles were found throughout a single vehicle. The data indicate that vehicles frequently occupied by firearms users are a potential source for inadvertent transfer of GSR to persons unrelated to firearm activity. In criminal cases where vehicles have been used, such transfer processes for GSR need to be considered within the context of any case interpretation. The implications for subsequent contamination and transfer processes from such vehicles require further investigation.     

A God of Vengeance and of Reward? Voters and Accountability

Theories of democratic politics prize congruence between citizens’ preferences and their elected representatives’ actions in office. Elections are a critical means for achieving such policy congruence, providing voters the opportunity to chasten representatives who are out of step with constituent preferences and to reward the faithful. Do voters act this way? Recent studies based on observational data find they do, but these data are somewhat limited. We employ a survey experiment to estimate the extent to which information about policy congruence affects voters’ evaluations of representatives. We informed some subjects how often their member of Congress’s voting decisions match their own stated preferences on the same policies. We find that information about congruence enhances accountability by affecting constituent evaluations of representatives and may also affect citizens’ propensity to participate in upcoming elections.     

Research Foundations of Greenbook Interventions to Address the Co‐Occurrence of Child Maltreatment and Adult Domestic Violence

Twenty years ago the National Council of Juvenile and Family Court Judges published Effective Intervention in Domestic Violence and Child Maltreatment: Guidelines for Policy and Practice, which became known as the Greenbook because of its green cover. This article presents the social science research leading up to the Greenbook and the 20 years beyond the publication of this seminal document, including examination of the effect of co‐occurrence of child maltreatment and exposure to domestic violence on child outcomes, the interventions for families to improve the safety of both child and adult victims, and future directions for research.     

Development and Pilot of the National Child Traumatic Stress Network Trauma‐Informed Juvenile Court Self‐Assessment

Trauma‐informed practices in the juvenile justice system are increasingly recognized as effective for promoting public safety through case management, rehabilitation, and treatment that is responsive to a traumatic event exposure and current trauma reactions. As court systems explore integration of trauma‐informed practices, tools for identifying best practices and strategically implementing trauma‐informed approaches are integral for judges and court administrators aiming to develop trauma‐informed courts. The current paper reviews the National Child Traumatic Stress Network's development of the Trauma‐Informed Juvenile Court Self‐Assessment (TI‐JCSA). Implications for self‐guided strategies to shift court practices and policies to align with trauma‐informed approaches will be discussed.     

Sudden Unexplained Nocturnal Death Syndrome: Epidemiological and Morphological Characteristics in Thai Autopsy Cases

With limited knowledge on epidemiological and morphological characteristics of sudden unexplained nocturnal death syndrome (SUNDS), this study was aimed to identify such data in Thai SUNDS autopsy cases. All the cases were men and nondrug abusers aged 20–49 years old. Most cases were originated in the Northeastern region of Thailand. Half of them were found dead from midnight to 6 a.m., with a peak time at 2 a.m. The death rate was relatively higher in May and June. Most SUNDS cases were blue‐collar workers (93.2%) and nonsmokers (60%), with a normal BMI (72.1%). Approximately one‐fifth of the cases had detectable blood alcohol concentrations. Symptoms before death were respiratory difficulty, seizures, and urinary incontinence. Their mean heart weight was 329.8 ± 35.1 g. Their lungs (88.6%) had some degree of congestion. Acute pancreatitis was not found in these SUNDS cases, and approximately half (40.9%) of the cases had their gastric content <100 mL.     

HOW COLLECTIVE IS COLLECTIVE EFFICACY? THE IMPORTANCE OF CONSENSUS IN JUDGMENTS ABOUT COMMUNITY COHESION AND WILLINGNESS TO INTERVENE

Existing studies have generally measured collective efficacy by combining survey respondents’ ratings of their local area into an overall summary for each neighborhood. Naturally, this approach results in a substantive focus on the variation in average levels of collective efficacy between neighborhoods. In this article, we focus on the variation in consensus of collective efficacy judgments. To account for differential consensus among neighborhoods, we use a mixed‐effects location‐scale model, with variability in the consensus of judgments treated as an additional neighborhood‐level random effect. Our results show that neighborhoods in London differ, not just in their average levels of collective efficacy but also in the extent to which residents agree with one another in their assessments. In accord with findings for U.S. cities, our results show that consensus in collective efficacy assessments is affected by the ethnic composition of neighborhoods. Additionally, we show that heterogeneity in collective efficacy assessments is consequential, with higher levels of criminal victimization, worry about crime, and risk avoidance behavior in areas where collective efficacy consensus is low.     

TOWARD A BIFURCATED THEORY OF EMOTIONAL DETERRENCE

Since Hobbes (1957 [1651] and Beccaria (1963 [1764]), scholars have theorized that the emotion of fear is critical for deterrence. Nevertheless, contemporary deterrence researchers have mostly overlooked the distinction between perceived sanction risk and fear of apprehension. Whereas perceived risk is a cognitive judgment, fear involves visceral feelings of anxiety or dread. Equally important, a theory explicating the influence of deterrence on both criminal propensity and situational offending has remained elusive. We develop a theoretical model in which perceived risk and fear are distinguished at both the general and situational levels. We test this theoretical model with data from a set of survey‐based experiments conducted in 2016 with a nationwide sample of adults (N = 965). We find that perceived risk and fear are empirically distinct and that perceived risk is positively related to fear at both the general and situational levels. Certain background and situational factors have indirect effects through perceived risk on fear. In turn, perceived risk has indirect effects through fear on both criminal propensity and situational intentions to offend. Fear's inclusion increases explanatory power for both criminal propensity and situational offending intentions. Fear is a stronger predictor than either self‐control or prior offending of situational intentions to offend.     

Time Radically Alters Ex Situ Evidentiary Soil 16S Bacterial Profiles Produced Via Next‐Generation Sequencing,,

Previous research has revealed the potential of soil bacterial profiling for forensic purposes; however, investigators have not thoroughly examined fluctuations in microbial profiles from soil aged on evidence. In this research, soils collected from multiple habitats were placed on evidence items and sampled over time, and then bacterial profiles were generated via next‐generation sequencing of the 16S rRNA locus. Bacterial abundance charts and nonmetric multidimensional scaling plots provided visual representation of bacterial profiles temporally, while supervised classification was used to statistically associate evidence to a source. The ex situ evidence soils displayed specific, consistent taxonomic changes as they aged, resulting in their drift in multidimensional space, but never toward a different habitat. Ninety‐five percent of the 364 evidentiary profiles statistically classified to the correct habitat, with misclassification generally stemming from evidence type and increased age. Ultimately, understanding bacterial changes that occur temporally in ex situ soils should enhance their use in forensic investigations.     

Total Ion Spectra versus Segmented Total Ion Spectra as Preprocessing Tools for Gas Chromatography – Mass Spectrometry Data

Alignment of fire debris data from GC‐MS for chemometric analysis is challenged by highly variable, uncontrolled sample and matrix composition. The total ion spectrum (TIS) obviates the need for alignment but loses all separation information. We introduce the segmented total ion spectrum (STIS), which retains the advantages of TIS while retaining some retention information. We compare the performance of STIS with TIS for the classification of casework fire debris samples. TIS and STIS achieve good model prediction accuracies of 96% and 98%, respectively. Baseline removal improved model prediction accuracies for both TIS and STIS to 97% and 99%, respectively. The importance of maintaining some chromatographic information to aid in deciphering the underlying chemistry of the results and reasons for false positive/negative results was also examined.