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Violence against youth is a global issue impacting millions each year. Increasingly, research has focused on studying those impacted by multiple forms of violence, or polyvictims. Evidence strongly suggests that polyvictimized youth tend to have worse physical and mental health outcomes than those who have experienced single forms of violence. Moreover, minoritized youth (i.e., racial and/or sexual minority youth, youth with disabilities) are more likely to experience polyvictimization, making this a social justice and equity concern. To date, there is no universal consensus on what exactly constitutes polyvictimization. This systematic review aims to examine the ways in which polyvictimization is being studied to inform both research and practice. As such, relevant databases were searched to amass the extant literature related to youth polyvictimization internationally. Empirical studies published since 2006 that focused on youth (under age 18) polyvictimization were included. After the review process, 264 studies met eligibility criteria, however 55 studies employed person-centered/finite mixture analyses and were removed for a separate review, resulting in 209 featured in the current systematic review. Results demonstrate that researchers are defining and operationalizing polyvictimization in different ways: (a) using individual victimization event counts; (b) employing domain-based counts; and (c) taking a "highest-victimized" percentage of their sample. The most used measurement tool was the Juvenile Victimization Questionnaire, though other validated tools and researcher-constructed questions were frequently utilized. Research on polyvictimization is burgeoning worldwide; however, this research is being conducted in disparate ways, making it difficult to compare findings and further advance the field., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Although there has been increased attention to campus sexual and relationship violence (SRV) because of Title IX and the #MeToo movement, much of that attention has focused on victimization of cisgender heterosexual women. This scoping review uncovers information from empirical studies on what is known about LGBTQ+ (e.g., lesbian, gay, bisexual, transgender, queer, and nonbinary) students' experiences of campus SRV. Using rigorous scoping review methods (i.e., searches of 15 databases, searches of expert websites, hand searching, reference harvesting, and forward citation chaining), we identified 60 documents published since 2000 that contained findings from empirical studies related to LGBTQ+ students and SRV on U.S. college and university campuses. Through content analysis, we summarized findings around five key themes: (1) extent and types of victimization, (2) negative outcomes, (3) knowledge of and attitudes about SRV, (4) perspectives on SRV services and prevention education programs, and (5) recommendations from study authors based on their findings. Implications for research, practice, and policy based on these findings are discussed.

Service providers are increasingly asked to identify individuals who are experiencing trafficking and to connect them with resources and support. Nonetheless, identification is complicated by the reality that those who are experiencing trafficking may rarely self-identify, and providers may fail to identify individuals who are experiencing trafficking due to lack of guidance on how to screen for trafficking capably and sensitively. With the aim of guiding practice, we undertook a scoping review to search for and synthesize trafficking screening tools and response protocols. Following the PRISMA extension for Scoping Reviews (PRISMA-ScR), we located 22 screening tools contained in 26 sources. We included any documents that described or tested human trafficking screening tools, screening or identification protocols, response protocols, or guidelines that were published in any year. All documents were abstracted using a standardized form. Key findings showed that most tools were developed by practice-based and non-governmental organizations located in the U.S. and were administered in the U.S. Few screening tools have been rigorously evaluated. The common types of screening questions and prompts included (a) work conditions; (b) living conditions; (c) physical health; (d) travel, immigration, and movement; (e) appearance and presentation; (f) mental health, trauma, and substance abuse; (g) associations and possessions; and (h) arrests and prior involvement with law enforcement. We were not able to locate specific response protocols that provided step-by-step guidance. Nonetheless, the review revealed available practice-based and research-based evidence to help inform guidance concerning how screening and identification of human trafficking may be administered.

Health and human service providers who aid traumatized individuals frequently experience vicarious trauma (VT). Although VT plays a critical role in service providers' mental health and well-being, as well as in the quality of their service provision, little information is available concerning the development and implementation of VT interventions for service providers. To advance the development of evidence in this area, we undertook a scoping review in which we reviewed existing interventions intended to address VT among service providers working with traumatized clients. Searches of electronic databases were conducted to identify studies published in peer-reviewed journals, with no date restrictions. Over 1,315 citations were reviewed, and a total of 27 studies were included in the final review. The findings show that VT interventions in the literature can be divided broadly into four categories: psychoeducation, mindfulness intervention, art and recreational programs, and alternative medicine therapy. The VT interventions reviewed generally showed promise in their key outcomes, including reductions in secondary trauma stress, compassion fatigue, burnout, and other mental health outcomes. However, the current body of research is lacking both in rigor and in specificity regarding the definition of VT. Furthermore, existing VT interventions are generally self-care based and tend to focus on general stress management rather than addressing the specific effects of VT. Therefore, we call for an increase in efforts to tailor VT interventions to different service settings and participant characteristics, as well as greater attention to developing primary VT interventions at the organizational level.

Theories play an important role in guiding intimate partner homicide (IPH) prevention research and practice. This study is the first systematic review of theories employed to explain why someone might kill their intimate partner. This review used rigorous methods to locate and synthesize literature that described explanatory theories of IPH perpetration. Using set search terms, we systematically searched 15 databases and repositories for theory-focused documents (i.e., theory papers or analyses) published in English from 2003 to 2018. Eighteen documents met these inclusion criteria and identified 22 individual theories that seek to explain why people might kill their intimate partners. These theories fell within four broader theoretical perspectives: feminist, evolutionary, sociological/criminological, and combined. Key tenets and focal populations of these 22 theories were identified and organized into a compendium of explanatory theories of IPH perpetration. Potential strengths and limitations of each of the four perspectives were described. Review findings underscored the likely importance of addressing gender as well as risk and protective factors at all levels of the social ecological model in efforts to understand IPH perpetration. The review findings highlighted the need for both integrated theories and a broader conceptual organizing framework to guide work aimed at IPH perpetration prevention to leverage the strengths of disparate theoretical perspectives. With the goal of informing future research, a preliminary iteration of such a framework is presented.

Topic: This scoping review investigated research regarding the magnitude of minor sex trafficking (domestic minor sex trafficking and/or commercial sexual exploitation of children) in the United States, summarizing estimates, methodologies, and strengths and weaknesses of the studies., Method: Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, peer-reviewed articles and the gray literature were accessed via databases searches, reference harvesting, and expert advice. Articles were included if they provided a count or prevalence proportion estimate of trafficked or at-risk minors across or within a region of the United States. Six empirical studies, published from 1999 to 2017, were included in the review., Results: Included studies produced count estimates ( n = 3) or prevalence proportion estimates ( n = 3) for youth at risk of minor sex trafficking ( n = 2) or reporting victimization ( n = 5). Studies examined sex trafficking risk and victimization in different geographical areas, including across the United States ( n = 2), in New York City ( n = 1), and in Ohio ( n = 1). Further, several studies focused on particular populations, such as street and shelter youths ( n = 1) and adjudicated males ( n = 1). Sampling methodologies of reviewed estimates included traditional random sampling ( n = 1), nationally representative sampling ( n = 2), convenience sampling ( n = 1), respondent-driven sampling ( n = 1), purposive sampling ( n = 1), and use of census data ( n = 2)., Conclusion: Little research has estimated the prevalence of minor sex trafficking in the United States. The existing studies examine different areas and populations and use different categories to estimate the problem. The estimates reviewed here should be cited cautiously. Future research is needed on this important topic, including methodologies to produce more representative estimates of this hard-to-reach population.

So far, no Chinese- or English-language journal investigations have been carried out on the entirety of research published on intimate partner violence (IPV) in China. Accordingly, the main purpose of this study was to analyze the contents of the totality of published IPV research articles indexed in China National Knowledge Infrastructure (CNKI). Specifically, the study aimed to investigate the input and output factors relating to published articles concerned with IPV, including their authors and contents. The CNKI was selected for investigation and analysis because it is the largest and most consulted academic online library in China. The analysis was conducted on 3,595 peer-reviewed journal articles on IPV over a 37-year period covering 1982-2018. The findings revealed that only 68 (1.89%) of the articles were empirically and quantitatively based. Findings among these 68 articles show that total contribution of IPV research has increased significantly over time in China, with increasing growth in the past two decades especially. Results also present summaries concerned with the reviewed studies' inputs (i.e., researchers' organizational affiliations, funding sources, and geographic settings), outputs (i.e., authors, journals, classifications, pages, topics, key words, definitions, theoretical approaches, samples, and methods), and outcomes (i.e., citations, downloads, prevalence rates, and correlates of violence). To sum, this is the first exploratory study of the unique and diverse body of IPV research in the Chinese-language and scientific literature. Overall, the study's results both help to inform future IPV research in China and foster and inform communications concerning IPV research globally.

Among violence prevention educators and researchers, there is growing interest in sexual, dating, and intimate partner violence (SV/DV/IPV) prevention programs for males because of evidence showing that boys and men are more likely than girls and women to perpetrate SV as well as more severe forms of DV/IPV. To date, comprehensive guidance on the content, structure, delivery, and effectiveness of such programs is limited. We reviewed randomized controlled studies that evaluated SV/DV/IPV perpetration prevention programs for boys and men. Searches yielded 5,249 potential documents for review of which 10 met inclusion criteria-representing 9 unique studies of 7 distinct programs. Two reviewers independently reviewed and abstracted data from these studies regarding program setting and target audience; type of violence addressed; number and length of program sessions; program duration, topics, activities, and delivery mode; and implementer details. Study characteristics were also examined (sample size, participant characteristics, recruitment, randomization, comparison/control condition, data collection protocols, attrition, measures of violence perpetration, and perpetration findings). The Cochrane Risk of Bias Tool was used to assess study design quality. Results show considerable heterogeneity among program content and delivery strategies, study designs, and outcome measurement. Study sample size ranged widely, and most used cluster-randomized designs, recruited undergraduate college students, and evaluated a multisession program delivered via group sessions. Only one program reduced men's self-reported SV perpetration. Accordingly, critical gaps exist around "what works" for SV/DV/IPV perpetration prevention programs for boys and men.

Intimate partner violence (IPV) survivors are much more likely to experience housing insecurity or homelessness than those who have not experienced IPV. However, little comprehensive research has evaluated the effectiveness of interventions used to address IPV survivors' housing insecurity. To address this knowledge gap, our team conducted a systematic review guided by three questions: (a) What are current interventions for addressing IPV survivors' housing needs? (b) What are the methodological strengths and limitations of the research evaluating those interventions? (c) How effective are the identified interventions? We identified potentially relevant peer-reviewed and gray literature using variations of predetermined search terms and four search methods. Twelve articles met inclusion criteria. Accordingly, this study showed that there is an overall dearth of research concerning interventions that address IPV survivors' housing insecurity and needs. Shelter is the most commonly assessed and available housing intervention for IPV survivors, but only limited empirical evaluation is available of shelter effectiveness. In addition, findings indicate both traditional shelter services and innovative interventions (e.g., rapid rehousing, flexible funding) would benefit from rigorous evaluation including examining survivor and situation characteristics contributing to housing strategy effectiveness.

At least one in seven homicides around the world is perpetrated by intimate partners. The danger of intimate partner homicide (IPH) associated with intimate partner violence (IPV) has led to the development of numerous IPV reassault and IPH risk assessment tools. Using 18 electronic databases and research repositories, we conducted a systematic review of IPH or IPV reassault risk assessment instruments. After review, 43 studies reported in 42 articles met inclusion criteria. We systematically extracted, analyzed, and synthesized data on tools studied, sample details, data collection location, study design, analysis methods, validity, reliability, and feasibility of use. Findings indicate that researchers in eight countries have tested 18 distinct IPH or IPV reassault risk assessment tools. The tools are designed for various professionals including law enforcement, first responders, and social workers. Twenty-six studies focused on assessing the risk of male perpetrators, although eight included female perpetrators. Eighteen studies tested tools with people in mixed-sex relationships, though many studies did not explicitly report the gender of both the perpetrators and victims/survivors. The majority of studies were administered or coded by researchers rather than administered in real-world settings. Reliable and valid instruments that accurately and feasibly assess the risk of IPH and IPV reassault in community settings are necessary for improving public safety and reducing violent deaths. Although researchers have developed several instruments assessing different risk factors, systematic research on the feasibility of using these instruments in practice settings is lacking.

Intimate partner violence (IPV) victimization is widespread among women with children and has negative consequences for both women's and children's well-being. Despite mixed evidence regarding the effect of IPV on women's parenting ability and behaviors, there is an increasing focus on mothering in the context of IPV, particularly among the child welfare and child protection systems. To help respond to this increasing focus, several interventions have been developed that specifically target parenting among IPV-affected women. Given the growing numbers of these interventions, a comprehensive review is needed to help elucidate the approaches that are most effective in meeting the needs of IPV-affected women and children. Therefore, we conducted an in-depth systematic review of the literature to examine the approaches and effects of interventions designed to address aspects of parenting among IPV-affected women. We identified 26 articles concerned with 19 distinct interventions for review. We found substantial heterogeneity in intervention delivery, format, length, and focus. We noted several limitations of the existing studies in terms of study sample, measures, design, and implementation. Given the heterogeneity of the existing interventions and the limitations of the current research base, it is not yet clear which interventions or intervention components are most effective in addressing the unique needs of women parenting in the context of IPV. Further research is needed to address these limitations, and professionals working with IPV-affected families should be aware that current services may not meet women's and children's needs.

Trafficking in persons (TIP) is a human rights violation with serious public health consequences. Unfortunately, assessing TIP and its health sequelae rigorously and reliably is challenging due to TIP's clandestine nature, variation in definitions of TIP, and the need to use research methods that ensure studies are ethical and feasible. To help guide practice, policy, and research to assess TIP and health, we undertook a systematic literature review of 70 peer-reviewed, published articles to (a) identify TIP and health research methods being used, (b) determine what we can learn about TIP and health from these varied methodologies, and (c) determine the gaps that exist in health-focused TIP research. Results revealed that there are various quantitative and qualitative data collection and analysis methods being used to investigate TIP and health. Furthermore, findings show that the limitations of current methodologies affect what is known about TIP and health. In particular, varying definitions, participant recruitment strategies, ethical standards, and outcome measures all affect what is known about TIP and health. Moreover, findings demonstrate an urgent need for representative and nonpurposive recruitment strategies in future investigations of TIP and health as well as research on risk and protective factors related to TIP and health, intervention effectiveness, long-term health outcomes, and research on trafficked people beyond women trafficked for sex. We offer recommendations for research, policy, and practice based on review results.

Health and human service providers have expressed growing interest in the benefits of yoga to help individuals cope with the effects of trauma, including anxiety, depression, and posttraumatic stress disorder (PTSD). Despite the growing popularity and strong appeal of yoga, providers must be mindful of the evidence regarding the efficacy of yoga in treating trauma effects as well as trauma-related mental health symptoms and illnesses. Therefore, our research team sought to answer two questions: (a) What is the evidence regarding yoga as a treatment for trauma effects, including anxiety, depression, and PTSD and (b) what are the clinical and service recommendations for using yoga with trauma-exposed individuals? Our initial scans identified a substantial body of research, including reviews. Rather than replicate earlier efforts, we undertook a systematic meta-review of 13 literature reviews, one of which included a meta-analysis. We determined the 13 reviews examined 185 distinct studies. Findings show that the evidence regarding yoga as an intervention for the effects of trauma as well as the mental health symptoms and illnesses often associated with trauma is encouraging but preliminary. Overall, the body of research is lacking in rigor as well as specificity regarding trauma. Review results also only allow for the recommendation of yoga as an ancillary treatment. Further, the reviews had considerable differences in their methods and limitations. Nonetheless, the results yielded findings concerning how clinicians and service providers can use yoga in their own practices, which is an important step for building an evidence base in this area.

Women who experience intimate partner violence (IPV) victimization are more likely to struggle with substance abuse problems than are women who do not experience IPV. Given the connection between IPV victimization and substance abuse, recommended practices urge collaboration between domestic violence service agencies and substance abuse treatment agencies to provide comprehensive services for women with these co-occurring problems. However, domestic violence and substance abuse services have unique histories of development that have led to distinct ways of service delivery. To promote successful collaborations, service providers and researchers are developing strategies to foster relationships across the two service sectors. The authors conducted a review of this emerging body of knowledge with the aim of assembling recommendations for strategies to foster collaboration between domestic violence and substance abuse services. The authors identified 15 documents for review inclusion and our analysis established 5 categories of documents. Findings yield key collaboration strategies and recommended service models. In addition, the review determined the existence of considerable challenges to promoting collaborative relationships between domestic violence and substance abuse treatment service sectors.

Children, youth, and adults of both genders are sex trafficked into and throughout the United States every day. Regrettably, little attention has been given to how human service providers might identify the sex-trafficking victims they are likely to encounter. To address this knowledge gap, the authors review 20 documents with the aim of detecting and synthesizing service identification recommendations in the scientific literature, government reports, and documents produced by organizations working with sex-trafficking victims. The review shows consensus regarding identification recommendations, including (a) trafficking indicators, (b) victim interaction strategies, (c) immediate response strategies, and (d) child-specific information. The review also shows consensus regarding screening questions that are important for service providers to use in identifying sex-trafficking victims. These questions relate to the victims' safety, employment, living environment, and travel and immigration status in addition to specific questions used with children and youth. The review results offer human service providers a preliminary set of screening strategies and questions that can be used to identify sex-trafficking victims in the context of human services. Building on the review findings, the authors offer policy and research recommendations.

This article examines literature reviews of research articles and dissertations focused on the effectiveness of college- or university-based sexual violence prevention programs. Literature reviews were eligible for inclusion in this article if they examined empirical published peer-reviewed research articles or dissertation research that reported original data; focused on examining the effectiveness of programs that were developed to reduce sexual violence that occurred in college or university settings; offered recommendations for developing and implementing effective college- or university-based sexual assault prevention programs; and reviewed studies that occurred in the United States. Eight review articles met the inclusion criteria. The results suggest that the effectiveness of college- or university-based sexual violence prevention programs varies depending on the type of audience, facilitator, format, and program content. Recommendations from existing reviews of empirical research concerning these program characteristics should be considered by college or university administrators when designing and implementing their own programs on campus.

International sex trafficking into the United States appears to be a serious and growing problem, although the evidence regarding prevalence, risk, and consequences is incomplete. Nonetheless, human service providers are increasingly being asked to offer services to sex trafficking survivors. Consequently, providers need information to guide services and program development in this emerging practice area. To address this knowledge need, we systematically reviewed and synthesized 20 documents addressing the needs of and services for international survivors of sex trafficking into the United States. The main finding from the review shows the importance of a continuum of aftercare services to address survivors' changing needs as they move from initial freedom to recovery and independence. Based on our synthesis of the reviewed literature, we present a service delivery framework to guide providers' development of services for survivors.

This literature review examines intimate partner violence in relation to pregnancy-associated femicide and suicide. Empirical publications were eligible for review if they included information on intimate partner violence and examined females who were pregnant/postpartum and who were victims of femicide/attempted femicide and/or suicide/attempted suicide. Nine publications met the inclusion criteria and were reviewed. Results suggest that intimate partners perpetrate one- to two-thirds of the pregnancy-associated femicides in the United States and that pregnant women make up 5% of urban intimate partner femicides. Intimate partner abuse during pregnancy appears to be a risk factor for severe intimate partner violence, including attempted/completed femicide. So little information exists concerning intimate partner violence in pregnancy-associated suicides that it is impossible to draw conclusions regarding this topic; however, a hospital-based study suggests that intimate partner violence may be a risk factor for attempting suicide while pregnant. More research is needed concerning intimate partner pregnancy-associated femicide and suicide so that evidenced-based preventive/therapeutic interventions may be developed.

Knowledge regarding intimate partner violence has evolved from a somewhat fragmentary and incomplete understanding of the topic to a more cohesive, multifaceted body of research. Despite these accomplishments, there are still many critical knowledge gaps about this important problem. In this age of fiscal restraint, using existing information to address research questions is extremely appealing. This article describes some currently available survey data sets that contain information regarding women's experiences of intimate partner violence and health, identifies a number of the strengths and limitations of these data sets, and makes recommendations concerning the types of survey data that should be gathered in the future to help move the field forward.