Violent backgrounds of economically disadvantaged youth: Risk factors for perpetrating violence?

Adolescent Job Corps residents (n=474) reported the violence they had experienced, witnessed, and perpetrated with regards to parents, siblings, friends, and strangers. Results indicated that there was a high prevalence of all types of violence in this atrisk adolescent sample. Moreover, the majority of adolescents who reported violent experiences indicated threat or use of a weapon was involved. Gender differences were obtained such that boys reported perpetrating more aggression against friends and strangers than girls. Girls reported witnessing more parental aggression than boys. No gender differences in parental victimization rates were obtained. Contrary to prediction, parental victimization did not significantly predict perpetration towards siblings, friends, or strangers for either gender. However, parental victimization did predict increased violence towards parents. Surprisingly, for females especially, witnessing parental violence reduced the likelihood of violence towards parents. These findings support the need to include conflict resolution skills as a component of Job Corps training.     

Assessment of violence risk in youth for juvenile court: relevant factors for clinical judgment

BACKGROUND: Assessment of violence risk in youth for juvenile court needs to be improved. AIM: To determine which items of the Structured Assessment of Violence Risk in Youth (SAVRY) are recorded in pre-trial mental health evaluations and which of these items are associated with the clinical judgment of the risk of violent recidivism. METHOD: A total of one hundred forensic diagnostic juvenile court files were rated with regard to the presence or absence of the thirty SAVRY risk items: ten historical, six contextual and eight individual items, and six protective items. Univariate and multivariate logistic regression analysis were used to examine the relationship between SAVRY risk items and the clinical judgment of violence risk. RESULTS: Most SAVRY-items had been recorded in the files. However, five historical items and the contextual item 'rejection by peers' did not appear in 25-62% of the files. Especially SAVRY items like 'negative-attitudes' and 'psychopathic traits' were the most powerful predictors for clinical judgment of high violence risk. Unexpectedly, historical items played a minor role in clinical judgment. CONCLUSION: Prospective research is needed with the use of SAVRY-items to improve evidence based violence risk assessment in court ordered mental health evaluations of youngsters.     

Risk factors for violence and relational aggression in adolescence

Analyses examined risk factors for seventh-and ninth-grade youth categorized as nonoffenders, physically violent, relationally aggressive, and both violent and relationally aggressive. Bivariate and multivariate results showed that relationally aggressive youth were elevated on most risks above levels for nonoffenders but lower than those for youth who were violent alone or violent in combination with relational aggression. Youth who were both relationally aggressive and violent did not differ from those who were violent alone on most risk factors examined. Peer, individual, and family risks were among the strongest predictors.     

Change in treatment has no relationship with subsequent re-offending in U.K. domestic violence sample: a preliminary study

In this study, data is presented from a sample of 52 male domestic violence offenders who were court mandated to attend a profeminist psycho-educational rehabilitation program in the West Midlands. The extent of both statistically and clinically significant psychological change achieved across a variety of measures (pro-domestic-violence attitudes, anger, locus of control, interpersonal dependency) assessed pre- and post-treatment, and their association with post-treatment re-offending within an 11-month follow-up period is examined. The results indicate that program completers achieved limited significant psychological change. However, the level of psychological change achieved had no association with re-offending.     

国产法医DNA检验试剂耗材检测DNA标准品的准确性研究

目的利用法医DNA标准品对自主研发的法医DNA检验试剂耗材进行电泳检测准确性的实验考查。方法实验平台分为2个：平台1全部由美国AppliedBiosystems公司进口的3130xl遗传分析仪、16道电泳毛细管与甲酰胺、电泳缓冲液、凝胶构成;平台2由AppliedBiosystems公司进口的3130xl遗传分析仪、16道电泳毛细管与本实验室研发的甲酰胺、电泳缓冲液、凝胶构成。在实验平台上对allelicladder、内标等标准品以及阳性对照9947a的STR复合扩增产物进行电泳检测,利用GeneMapper软件对电泳结果进行分析。结果自主研发的法医DNA检验试剂耗材可与国外进口的3130xl遗传分析仪配套使用,构建的实验平台对法医DNA标准品的检测结果准确无误。结论自主研发的甲酰胺、电泳缓冲液、凝胶等法医DNA检验试剂耗材检测准确性达到了国外同类产品水平。     

Accuracy and reliability of cone beam computed tomography of the jaws for comparative forensic identification: a preliminary study

Conventional computed tomography is an emerging modality in forensic identification but is not sufficiently accurate for use in dental identification primarily because of problems with metallic dental restoration-induced streak artifact. In this study, the accuracy and reliability of recording forensic information from cone beam computed tomography (CBCT) scans of the jaws when compared to conventional panoramic radiographs has been analyzed under experimental conditions. Information could be recorded with near-perfect repeatability and reproducibility. Information could also be recorded accurately, the sensitivity being 96.6% (95% CI, 95.1-98.1) and specificity being 98.4% (95% CI, 96.2-100). The metal dental restoration-induced streak artifact was at a level that permitted, in most cases, accurate observations. This is considered an important step in validating CBCT as a tool in comparative dental identification of bodies. It may have a role in mass fatalities and in chemical, biological, radiological, and nuclear incidents, but further studies are required to assess the feasibility of this.     

Developing a citywide youth violence prevention plan: perceptions of various stakeholders

Researchers suggest that violence prevention requires community-wide efforts and partnerships that demonstrate commitment to youth development. Missing from this research, however, are studies considering how these partnerships are formed and how members of various groups involved in these partnerships perceive youth violence prevention. This study sought to fill this void. A series of seven focus group interviews were conducted with 85 stakeholders involved in developing a youth violence prevention plan in one community. Results suggest that the stakeholders were optimistic about developing violence prevention strategies and forging partnerships between various groups. Participants pointed to specific themes that provide a framework for understanding youth violence prevention planning efforts. Implications are provided.     

Implicit attitudes toward violence among male perpetrators of intimate partner violence: a preliminary investigation

Whereas cognitive variables are hypothesized to play an important role in intimate partner violence (IPV) etiology and intervention, cognitive assessment methods have largely targeted offenders' explicit, controlled cognitive processing using paper-and-pencil questionnaires prone to social desirability biases. Using an implicit measure of attitudes (the Implicit Association Test [IAT]), we assessed attitudes toward gender, violence, and the association between gender and violence among 50 men enrolled in an IPV treatment program and a comparison sample of 40 nonviolent (NV) men. Although no group differences were noted on explicit attitudinal measures, men in the IPV group showed more positive implicit attitudes regarding violence, and a more rapid association between women and violence. Among men in treatment for IPV, the attitudes toward violence IAT was significantly correlated with self/partner-reported IPV frequency. In accordance with social information processing models of aggression, these results suggest that aggressogenic attitudes are likely to operate automatically and with little conscious deliberation. As a result, clinicians and researchers must adapt assessment and intervention strategies to capture both implicit and explicit aspects of cognitive processing.     

反相高效液相色谱法检测生物胺的法医学应用初探

目的采用反相高效液相色谱法(RP-HPLC)检测大鼠肌肉组织中7种生物胺,并探讨其在法医学中的应用价值。方法以丹磺酰氯为衍生剂,通过ZORBAX Rx-C18反相色谱柱分离,以乙腈-水作流动相梯度洗脱,流速为1.0mL/min,柱温为20℃,DAD检测器,对色胺、腐胺、尸胺、组胺、酪胺、亚精胺、精胺7种生物胺进行检测。结果 7种生物胺得到良好分离,在0.5～100.0μg/mL的范围内线性良好,相关系数均>0.99,检出限在0.14～0.50μg/mL之间;对大鼠肌肉样本的添加回收率在83.8%～100.6%之间,相对标准偏差均<11%。结论采用RP-HPLC法检测生物胺,方法简便、快速、灵敏,能够满足尸体组织中生物胺检测的需要。     

Finding common ground in the study of child maltreatment, youth violence, and adult domestic violence

For several decades, we have witnessed a surge in public policies aimed at ending child maltreatment, youth violence, and adult domestic violence. Commensurate with this increased interest has been a growing body of research on each issue's etiology, affected population, and the public policy and prevention impacts. Even a cursory review of the literature suggests a number of commonalities across these forms of violence. As such, it seems timely and prudent to craft a research framework that facilitates the identification and dissemination of practice and policy innovations that can address all three concerns. This article articulates an overarching framework to guide researchers in better identifying common avenues of study. After summarizing the commonalities found across the three areas, the authors identify cross-cutting issues that have particular relevance for advancing our understanding of violence and its effects on personal and social interactions.     

Risk factors for sexual victimization among male and female homeless and runaway youth

Risk factors associated with the likelihood of being sexually victimized by a stranger or friend/acquaintance since being on the street was examined among 372 homeless and runaway youth. Young people were interviewed on the streets and in shelters by outreach workers using a systematic sampling strategy. Youth who engaged in more high-risk behaviors were expected to be at greater risk for sexual victimization by both known and unknown assailants. Results indicated that for females, running from home for the first time at an earlier age was associated with sexual victimization by both a stranger and friend/acquaintance. However, engaging in deviant subsistence strategies, survival sex, and grooming predicted being sexually victimized by a friend/acquaintance. For males, survival sex and grooming predicted stranger sexual victimization, whereas sexual orientation was associated with sexual victimization by a friend/acquaintance. Overall, 35% of the sample had been sexually victimized.     

青少年暴力行为的预测和评估

青少年暴力行为是全球广泛关注的公共卫生和社会问题,了解青少年暴力行为的风险因素和预测方法有助于减少青少年暴力行为的发生.本文对青少年暴力的个体因素、社会心理因素、生物学因素进行了总结,对预测和评估研究的现状进行了复习,以期对青少年暴力行为发生的减少和进一步深入研究有所帮助.     

Post-traumatic stress disorder in maltreated youth: a study of diagnostic comorbidity and child factors

The study of post-traumatic stress disorder (PTSD) in maltreated youth has received increased attention, though extensive comparisons to maltreated youth without PTSD and administrations of anxiety-based structured diagnostic interviews remain needed. We examined maltreated youth with or without PTSD using structured diagnostic interviews and standardized child self-report measures. We hypothesized that maltreated youth with PTSD, compared to their peers without PTSD, would experience significantly greater duration of abuse, diagnostic comorbidity, PTSD symptomatology, dysfunctional family environment, and avoidant coping styles. Results indicated that the group with PTSD did indeed experience significantly greater duration of abuse, diagnostic comorbidity, and PTSD symptomatology, though less so dysfunctional family environment or avoidant coping styles. The presence of a mood or anxiety disorder was highly predictive of PTSD in this sample. Results are discussed within the context of evolving etiological and maintenance models of PTSD in maltreated youth.     

Soil sample metagenome NGS data management for forensic investigation

Soil analysis is a valuable resource in forensic investigation. Classical forensic soil analysis involves examination of its physical characteristics and chemical composition, such as soil type, colour, particle size, shape, pH, elemental, mineral and organic content. However the limited variability of these parameters is not always allowing adequate discrimination between soil samples. As soil supports extreme diversity of microorganisms and eukaryotic communities, microbiological approaches have been proposed. Several molecular approaches for microbial DNA profiling are available; however there is a lack of published data of implementation of the next generation sequencing (NGS) approaches for forensic soil analysis.The aim of the current study was elaboration of criteria for soil metagenome data management and database searching. We used our previously sequenced collection of 11 samples collected from different environments (forests, fields, grasslands, urban park) with different flora. The single sample collection includes 9 soil samples per one sampling area (30 m × 30 m) spaced by 15 m. In the current study we concentrated mainly on 18S rRNA gene V2-V3 region for fungi however SSU rRNA region for arbuscular mycorrhizal (AMF) fungi and V2-V3 hypervariable region of 16S rRNA gene for bacterial communities were taken into account. The sequencing was performed by Roche/454 platform. For data analysis OTU based approach on mothur software and NCBI BLASTN search were used. NCBI BLASTN analysis revealed altogether 2983 AMF matches and 8997 18S matches as well as 25477 OTUs (16S) were determined. Several data filtration approaches were used for data management. We found that 18S marker results could be used to create and run a filtered database that is computationally much more efficient and flexible. Our results have broad impact; however more samples have to be analysed, additional studies performed and cooperation between soil scientists and forensic scientists is required to be able to implement these novel techniques into the routine forensic practice.     

Biological factors and crime: implications for forensic psychiatry

To summarize, we can say that (1) Criminal behavior, especially chronic criminal behavior, seems to be partly genetically predisposed; (2) An important task at this point is to attempt to determine the biological factors which predispose people to crime; and (3) We have related some tentative initial steps being taken in the study of the autonomic nervous system as one possible heritable, biological basis for the failure of normal social learning forces in inhibiting criminal behavior. Early in this paper we discussed the tenability of asserting criminal responsibility on individuals whose criminal behavior has a partly genetic etiology. But this special consideration seems to set biological factors apart as being in some unique causal category. In fact, genetic, physiological, and biochemical factors are causal agents in the same sense as family, social class, or neighborhood factors. Of course, criminal behavior (like all other behavior) must be caused; one class of causal variables is the biological category. The legal doctrine of responsibility is not challenged by identifying biological factors as partially determining crime any more than it is by findings of social causation. Only in cases in which abnormal biological factors are exceptionally powerful influences might responsibility be challenged. Such cases will be quite rare.     

Adapting the concept of explanatory models of illness to the study of youth violence

This study explores the feasibility of adapting Kleinman's concept of explanatory models of illness to the study of youth violence and is conducted within the hermeneutic tradition. Data were collected by interviewing 11 violent adolescents, their parents, and their caregivers. Four types of explanatory models representing the adolescent girls', the adolescent boys', the caregivers', and the parents' understanding of youth violence are found; they correspond sufficiently to Kleinman's concept and establish the feasibility of adapting it to the study of youth violence. The developmental nature of the parents' and adolescents' models makes it feasible to study them by means of hermeneutic methodology. There are some clinically significant discrepancies between the caregivers' and the clients' explanatory models; identifying such discrepancies is an essential step in the process of breaking down barriers to therapeutic communications. Violent adolescents should be encouraged to define their own explanatory models of violence through dialogue with their caregivers.     

Psychological adjustment in a forensic sample: relationship with approach- and avoidance-coping typologies

Most studies that relate coping strategies with psychological symptoms usually consider a single coping dimension. This means that interpretation of the results is unclear and only partially true as subjects activate different types of coping strategies simultaneously when faced with a stressor. The objective of the present study is to analyze the relationships between coping and psychopathology in young inmates, taking into account the number of approach and avoidance answers simultaneously. The results show that the inmates with above-average scores in avoidance coping and below average in those of approach (coping responses inventory--adult form, [CRI-A]) show higher symptomatology (MMPI-2) than the inmates who obtain above-average scores in both avoidance and approach strategies. It can be deduced that it is not the high use of avoidance coping that is related to psychopathology, but rather the combined use of many avoidance strategies and few approach strategies. The convenience of jointly taking into account both types of coping is discussed.     

North American transnational youth gangs: Breaking the chain of violence

Youth gangs are nothing new. They appeared in New York City and Philadelphia at the end of the American Revolution. Their numbers and violence correspond to peak levels of immigration and population shifts that occurred in the early 1800s, 1920s, 1960s, and late 1990s. Entrenched in American culture, gangs are romanticized in movies while rap artists copy their dress and jargon. However, because of their growing membership and globalization, gangs have become a public security threat that must be addressed.