Application of mitochondrial DNA sequence analysis in the forensic identification of Chinese sika deer subspecies

As a direct and indirect consequence of human activities, only two subspecies, Cervus nippon sinchuanicus and Cervus nippon kopschi, currently subsist in the wild of China. However, a large population of Cervus nippon hortulorum and Cervus nippon nippon is raised in order to gain deer parts for Chinese traditional medicine. According to Chinese Wild Animal Conservation Law, hunting, capturing and trading of the wild sika deer are strictly banned, however, raising and trading of the domestic individual are permitted. Thus, it is very necessary to identify the subspecies of sika deer in China in forensic tests. In our study, we used mitochondrial DNA control region sequence analysis and phylogenetic analysis to identify the subspecies of sika deer. Mitochondrial DNA control region sequences analysis revealed that two haplotypes came from the unknown samples. One is the same as the haplotype that came from the samples of wild population of C. n. kopschi. Phylogenetic analysis indicated that the two haplotypes of unknown samples clustered with the haplotypes of C. n. kopschi, and had significant difference from the haplotypes of the other subspecies. These results together revealed that the unknown samples came from two individuals that belong to the wild population of C. n. kopschi living in the Qinglingfeng State Natural Reserve of Zhejiang province. Therefore, the results provide forensic evidence of illegal wild animal hunting.     

Cytochrome b based genetic differentiation of Indian wild pig (Sus scrofa cristatus) and domestic pig (Sus scrofa domestica) and its use in wildlife forensics

The Indian wild pig (Sus scrofa cristatus) is a protected species and listed in the Indian Wildlife (Protection) Act, 1972. The wild pig is often hunted illegally and sold in market as meat warranting punishment under law. To avoid confusion in identification of these two subspecies during wildlife forensic examinations, we describe genetic differentiation of Indian wild and domestic pigs using a molecular technique. Analysis of sequence generated from the partial fragment (421 bp) of mitochondrial DNA (mtDNA) cytochrome b (Cyt b) gene exhibited unambiguous (> 3%) genetic variation between Indian wild and domestic pigs. We observed nine forensically informative nucleotide sequence (FINS) variations between Indian wild and domestic pigs. The overall genetic variation described in this study is helpful in forensic identification of the biological samples of wild and domestic pigs. It also helped in differentiating the Indian wild pig from other wild pig races. This study indicates that domestic pigs in India are not descendent of the Indian wild pig, however; they are closer to the other wild pig races found in Asia and Europe.     

The application of lead isotope analysis to bullet individualization in two homicides.

Bullets were characterized by lead isotope ratio analysis and trace element analysis in two homicides. In one case, we concluded that a fatal bullet did not share a common origin with bullets in a box of ammunition containing 24 cartridges taken from suspects. Evidence in the second case included two bullets from the crime scene and 163 bullets taken from various suspects. We were able to infer that the two bullets from the crime scene did not share a common origin and that they differed from all of the bullets taken from suspects. All of the suspects' ammunition had been reloaded as was evident both from trace and isotopic analysis and, indeed, from visual inspection.     

How to Cautiously Uncover the “Black Box” of Machine Learning Models for Legislative Scholars

Machine learning models, especially ensemble and tree-based approaches, offer great promise to legislative scholars. However, they are heavily underutilized outside of narrow applications to text and networks. We believe this is because they are difficult to interpret: while the models are extremely flexible, they have been criticized as “black box” techniques due to their difficulty in visualizing the effect of predictors on the outcome of interest. In order to make these models more useful for legislative scholars, we introduce a framework integrating machine learning models with traditional parametric approaches. We then review three interpretative plotting strategies that scholars can use to bring a substantive interpretation to their machine learning models. For each, we explain the plotting strategy, when to use it, and how to interpret it. We then put these plots in action by revisiting two recent articles from Legislative Studies Quarterly.     

Mitochondrial DNA analysis of the presumptive remains of Jesse James

We report here the results of mtDNA analysis of remains exhumed in July, 1995 from Mt. Olivet Cemetery in Kearney, Nebraska, that are thought to be those of Jesse James. The remains were poorly preserved, presumably due to wet and slightly acidic soil conditions, and insufficient DNA for analysis was obtained from two bone samples. However, two of four teeth, and two hairs recovered in 1978 from the original burial site on the James Farm, did yield reproducible mtDNA sequences. These mtDNA sequences from the teeth and hairs were all identical, suggesting that they came from the same individual; furthermore, this mtDNA sequence was identical to mtDNA sequences determined from blood samples from two maternal relatives of Jesse James. Therefore, either the remains are indeed those of Jesse James, or they are from an unrelated individual who, by chance, happens to have the same mtDNA sequence. To assess the probability that an unrelated individual would have the same sequence, we searched the forensic mtDNA database, and found that this sequence does not appear among the 2426 mtDNA sequences therein. Hence, the mtDNA analysis supports the identification of the exhumed remains from Mt. Olivet Cemetery as those of Jesse James.     

Effects of collaborative recall: Denying true information is as powerful as suggesting misinformation

We tested whether someone's ability to tell a good story, in terms of the Reality Monitoring (RM) tool, affects the way s/he judges the stories told by others. Forty participants (undergraduate students) wrote down two statements – one about activities they did 30 minutes ago, and the other about a past event. Subsequently, they rated the quality of a target statement written by someone else. We found that the tendency to provide a not so detailed or a very detailed statement was stable across the two statements the participants wrote. Furthermore, this tendency affected how they judged the target statements: The richer a participant's statements were compared to the target statement, the more critical the participant was in judging the target statement. These findings imply that RM is subject to biases which are related to individual differences. We discuss the implications of these findings for applying the RM lie detection tool in the field.     

Patient inducement, provider priorities, and resource allocation in public mental health systems

Public mental health systems are increasingly facing demands from the criminal justice system and social services agencies to provide services and support in cases in which mental illness contributes to crime, homelessness, or poverty. In this article we analyze how policies from outside public mental health systems affect resource allocation within these systems, using examples from criminal justice. These policies use two types of mechanisms: inducing patients to consume treatment (by offering rewards or imposing penalties) and inducing clinicians to provide treatment (by creating priorities). We propose a classification of these social policies based on whether they affect demand through rewards or penalties or supply through priorities. We then relate the classification to data on patients treated in public systems to evaluate the current prevalence and potential for growth in these outside demands. These inducements impose a set of nonobvious costs on other patients who are not targeted by the policies. Furthermore, they create incentives for both patients and providers to modify their behavior in order to take advantage of rewards, avoid penalties, or better compete for resources with prioritized patients. We consider some policy implications for avoiding unintended consequences of these policies.     

Three dimensional visualization and comparison of impressions on fired bullets

Currently, optical devices, such as microscopes and CCD cameras, are utilized for identification of bullets and tool marks in the field of forensic science. While these optical methods are easily manageable and effective, they are under great influence of illumination condition. In other words, appearances of striations through these optical devices have possibility to be changed by lighting condition. Besides these appearance-based approaches, we can utilize three dimensional (3D) geometric data of tool marks that are free from lighting condition. In this study, we focused on 3D geometric data of landmark impressions on fired bullets for identification. We obtained the 3D surface data of tool marks by a confocal microscope and reconstructed virtual impressions on a PC monitor from the geometric data. Furthermore, the 3D data are exploited to numerical matching of two surface shapes. We also visualized the difference of two shapes. In order to do this, two surface models are aligned automatically. In this process, pairings of correspondent points on both surfaces are determined. Distance analysis between these pairs leads to a shape comparison. Since comparison results are visualized, they are intuitive and easily perceptive.     

Polygraph admissibility

Polygraph tests are psychological tests that are widely applied in the criminal justice system, but they are rarely administered or studied by psychologists. Two recent federal appeals court decisions may have opened the door to the admissibility of polygraph tests by displacing the long controllingFrye standard. However, these courts have also raised a number of challenges that must be overcome before polygraph tests will be regularly admitted into evidence. We examined the logic of these two recent decisions and the challenges they raise, and we found those challenges to be significant and perhaps daunting. Many of the challenges facing polygraph arise from poor training and a lack of standardization in the polygraph profession. We consider some potential, solutions, but the outlook for change in the polygraph community is dim unless it is forced by the courts or by legislation. Polygraph tests are also challenged by potentially effective countermeasures, and there presently are no easy solutions to those problems. Increased activity and interest are needed from the scientific community if the general situation is to improve.     

The deliveries cannot stop: Ecological (dis) advantages and socio-spatial safety tactics against predatory crimes among Brazilian couriers

In this article we discuss the reactions and responses of Brazilian motorcycle couriers (motoboys) to the risk of predatory crimes. We show that they work two simultaneous and overlapping “shifts”: the first involves carrying out their professional responsibilities, and the second, reducing the opportunities for victimization presented by those responsibilities. We analyse the socio-spatial tactics they adopt with a view to optimising security. These involve restricting their interactions and negotiations with neighbours and customers, as well as with criminals to guarantee that the deliveries are made and also to manage the various risks associated with working in different ecological areas. We explore the effect of these tactics on their activities, on labour relations and on attitudes to their customers in the delivery business. It concludes that both negotiation types point towards a process of expanding interactions, creating alternative distribution networks and seeking methods of protection against risks that cannot be overcome simply by the couriers protecting themselves.     

Effects of prior knowledge and expert statement on belief in recovered memories: an international perspective

We tested the hypothesis that beliefs in the purported attributes of recovered memories of child sexual abuse (CSA) are associated with knowledge of the "recovered/false memory debate", and that such beliefs will be related to assessments of the credibility of statements made by participants in a vignette about CSA. Participants from five countries (the United States, Canada, New Zealand, the United Kingdom and Israel) responded to a questionnaire regarding beliefs about recovered memory as well as self-reported exposure to and knowledge of the debate. In addition, they assessed the credibility of statements made by a daughter (reporting recovery of memories of sexual abuse by her father), her father (denying the allegation and accusing the daughter's therapist of implanting in her false "memories" of abuse), and two experts (each supporting one of the two protagonists). We found that prior knowledge of the debate across countries was linked to beliefs in specific attributes of recovered memories and to a subset of the credibility assessments of statements made by the protagonists and their experts. For individuals, however, credibility assessments were unrelated to knowledge of the debate, but they were related to beliefs about memory recovery. Finally, credibility of the protagonists' statements was differentially associated with those made by the daughter's and the father's experts. The results suggest that whereas familiarity with the debate does not affect the credibility of the statements made by the complainant and the accused, expert testimony does, as has been found in prior research. The psycholegal implications of this conclusion are discussed.     

Does Inequity Aversion Motivate Punishment? Cleaner Fish as a Model System

In human social interactions, punishment is often directed at cheating individuals. Subjective reports and neuro-imaging studies indicate that the experience of interacting with a cheat produces negative emotions and that the act of punishing a cheat assuages these feelings. However, while negative emotions may elicit punishment, the precise source of these emotions remains obscure. Specifically, it is often very difficult to tease apart whether punishing individuals are inequity averse (upset because cheating partner receives more than they should) or, more simply, whether they might be loss averse (upset because their payoffs did not meet their expectations). We compare results on punishment and inequity aversion in humans with results from a non-human model system, the cleaning mutualism between bluestreak cleaner wrasse (Labroides dimidiatus) and its reef-fish ??clients??. Male cleaner fish are known to punish females that cheat during joint client inspections, but a recent study failed to demonstrate evidence for inequity aversion in this species. We suggest that punishment in cleaner fish may be motivated by loss aversion rather than inequity aversion. Punishment in humans might also often be motivated by loss aversion??and empirical studies that disentangle the two competing motives for punishment are a clear research priority.     

Development of impulsivity and risk‐seeking: Implications for the dimensionality and stability of self‐control*

In Gottfredson and Hirschi's self‐control theory, introduced in 1990, they contend that self‐control is a unidimensional construct that develops early in childhood and remains stable throughout the life span. According to findings reported in recent research, however, these arguments are now being challenged, with scholars pointing to ways in which self‐control may be multidimensional in nature and may change beyond the period of alleged stabilization. In this study, we draw on Steinberg's dual systems model, introduced in 2008, to consider this issue further. We examine that model's two key elements of low self‐control—risk‐seeking and impulsivity—to determine whether they are empirically distinguishable from one another and have differing developmental trajectories from childhood to early adulthood. We also consider the consequences of changes in risk‐seeking and impulsivity for within‐individual changes in crime. We examine these issues with data from the National Longitudinal Survey of Youth 1979 (NLSY79) for individuals from 10 to 30 years old. The results of our analyses show support for a multidimensional and dynamic conception of self‐control—from age 10 to age 30, risk‐seeking and impulsivity are empirically distinct and develop in divergent ways that are consistent with the dual systems model. Changes in risk‐seeking and impulsivity also affect changes in crime, but their effects vary with age and changes in the other element. We discuss these findings and their implications for self‐control and the development of life‐course criminology.     

Specifying the direct and indirect effects of low self-control and situational factors in offenders' decision making: Toward a more complete model of rational offending

This paper builds on work by Nagin and Paternoster in which they contend that two recent developments in criminological theory, self-control and rational choice, have been explored separately rather than in conjunction with one another. In their analysis, Nagin and Paternoster found direct effects for variables from each of these theories and called for more research into simultaneous examination of the two. We build on their work by delineating a more highly specified model of rational offending, in which we observe that the research thus far has not examined the indirect effects of low self-control. We believe that this area is grossly underdeveloped and that such an examination is necessary for a more complete understanding of criminal offending. We advance three hypotheses concerning the integration of low self-control into a rational choice framework: (1) that low self-control will have both direct and indirect effects via situational characteristics on intentions to shoplift and drive drunk; (2) that situational characteristics will have direct effects on intentions to deviate, as well as effects on other situational factors; and (3) that a model uniting the effects of low self-control and situational characteristics will provide a good fit to the data. We find support for all these hypotheses and suggest that future theoretical developments will be improved by the integration of low self-control with situational characteristics in a more general model of offending.     

Not domestic violence or cultural tradition: is honour-based violence distinct from domestic violence?

This paper addresses an important conceptual question surrounding the categorisation of honour-based violence (hereafter ‘HBV’) – Is HBV a subspecies of domestic violence (hereafter ‘DV’)? According to academic commentators such as Reddy, Aujla and Gill, HBV falls within the broad spectrum of DV. Utilising data extracted from interviews conducted with 30 key agents, this paper will seek to provide incontrovertible evidence that HBV is different to DV because the characteristics it presents offer some differences. Furthermore, the overall strategies used to investigate HBV by UK law enforcement agencies differ to that of DV. Being this specific about HBV does not necessarily mean that one succumbs to cultural-essentialist assumptions about the prevalence of such violence in particular communities either. Rather, an understanding that HBV can be different will help identify the serious dangers it presents and the strategies needed to support victims.     

Body-Worn Cameras and Citizen Interactions with Police Officers: Estimating Plausible Effects Given Varying Compliance Levels

Recent citizen deaths involving police use of force have increased discussion surrounding police accountability and community relations. One piece of this discussion is the use of body worn cameras (BWCs) by officers. Unfortunately, little rigorous research has been conducted to estimate the effectiveness of BWCs in reducing problematic police-citizen interactions. In this paper, we estimate two measures of effectiveness of BWCs by comparing incidents that occur in a squad assigned cameras to incidents that occur in a squad assigned control. First, we estimate the effect of being assigned a BWC (but not necessarily using the camera) on reducing complaints and resistance associated with incidents. Second, we employ data on BWC use to estimate the effect of cameras if they were used with full compliance. Together, these two estimates provide a plausible range of effectiveness that policymakers can expect from BWCs. We find that BWCs have no effect on the rate of arrest or resistance, but can substantially reduce complaints.     

Who Wants Informal Courts? Paradoxical Evidence from a Yugoslav Attempt to Create Workers' Courts for Labor Cases

The comrades' courts of the East European socialist countries are considered by those who favor alternative means of dispute resolution to be admirable examples of informal courts in modern industrial societies. However, these courts have not been extensively investigated. This article presents the results of an intensive observational study of one kind of socialist alternative court, the Yugoslav Courts of Associated Labor, comparing them with an ideal model of informal courts and with the available data on comrades' courts in other East European socialist countries. We find that, in contrast with the latter, the Yugoslav courts are indeed workers' courts, in the sense that they are used by workers—over 90% of their cases are brought by individual workers. On the other hand, they are not workers' courts in the sense of being controlled by workers—they are instead dominated by legal professionals. We conclude that these Yugoslav courts are attractive to individual workers precisely because they are not informal, social courts, but rather are independent legal agencies from which workers may receive unprejudiced decisions and substantial remedies.     

It's not the time they spend, it's what they do: The interaction between delinquent friends and unstructured routine activity on delinquency : Findings from two countries

This study examines whether having delinquent friends interacts with other peer-related variables in the explanation of adolescent offending. We hypothesise that the relationship between delinquent friends and offending might be conditioned by the effect of (1) how much time they spend with their friends, (2) how much time they spend in unstructured routine activities and (3) their emotional relationship with their friends. To test these three hypotheses we use data from two independent samples of young adolescents in Halmstad, Sweden (N = 1,003) and in Cologne and Freiburg, Germany (N = 955). The results found strong support that the effect of delinquent friends on adolescent offending is conditional on the level of time they spend in unstructured routine activities. This indicates that delinquent friends have a stronger effect on offending for adolescents who often spend their free time in unstructured routine activities.     

Gender, Threat/Control-Override Delusions and Violence

This study brings together the threat/control-override perspective and the literature on gender and stress coping to argue that gender moderates the association between threat delusions and violence. We suggest that men are more likely than women to respond to stressors such as threat delusions with violence. We test these ideas using data from the MacArthur Violence Risk Assessment Study, a multi-wave study of post-discharge psychiatric patients. Within-person results from two-level hierarchical models support the idea that men and women cope with threat delusions differently. Specifically, we find that men are significantly more likely to engage in violence during periods when they experience threat delusions, compared with periods when they do not experience threat delusions. In contrast, women are significantly less likely to engage in violence during times when they experience threat delusions, compared with periods when they do not. We discuss these findings in light of the literature on gender and stress coping.