Effectiveness of a Bystander Intervention Program to Increase Bystander Behaviors Across Latent Risk Groups of High Schoolers.

Bystander intervention programs have established efficacy to increase bystander behaviors to prevent interpersonal violence (IPV). Little research has investigated intervention efficacy among latent risk classes among high school students. Data from a five-year randomized control trial were used to conduct multigroup path analyses to assess the association between type of training received and bystander outcomes moderated by risk groups identified via latent profile analysis (LPA). LPA was used to identify risk based on six indicators related to violence exposure, association with aggressive friends, and alcohol use. Bystander training received was the primary independent variable characterized as: no training, overview speech alone, or skills training. Outcomes included (a) observed bystander behaviors; (b) reactive bystander behaviors; or (c) proactive bystander behaviors. Three risk groups were identified via LPA: low risk, moderate risk witnesses of IPV, and highest risk victims and perpetrators. Of the bystander trainings received, overview speeches only increased reactive bystander behaviors among low risk students. The skills training was effective at increasing most bystander outcomes among all risk groups, with the largest effect sizes observed among the highest risk victims and perpetrators profile. Findings suggest that tailoring or modifying bystander training based on the risk profiles of youth may lead to greater potential to increase bystander behaviors to reduce risk of violence. Specifically, overview speech trainings should be targeted to low risk youth, while skills training primarily delivered to higher risk youth. These skills trainings could incorporate content related to trauma-informed care as well as associations with alcohol use, which may enhance their effectiveness further.

Bystander Program to Reduce Sexual Violence by Witnessing Parental Intimate Partner Violence Status.

INTRODUCTION: Youth who witness parental intimate partner violence are at increased risk for sexual violence. Existing data from a cluster RCT were used to determine the effectiveness of Green Dot bystander intervention to reduce sexual violence among high-school students who did and did not witness parental intimate partner violence. STUDY DESIGN: A secondary analysis was conducted in 2021 of extant data from a 5-year cluster RCT. SETTING/PARTICIPANTS: A total of 26 high schools in Kentucky were randomized to intervention or control condition in 2010. A total of 15,863 surveys were analyzed from baseline, 30,014 from partial intervention implementation (Years 1 and 2), and 25,907 from full implementation (Years 3 and 4). The sample was stratified to include students who witnessed or did not witness parental intimate partner violence. INTERVENTION: The bystander intervention program was delivered in 2 stages. During partial implementation, a persuasive speech describing rates, risk factors, and bystander-based approaches to violence prevention was provided to most students in schools randomized to the intervention. During full implementation, an in-depth 5-hour skill-based bystander training was provided to popular opinion leaders among the students in intervention schools (10%-15%). MAIN OUTCOME MEASURES: The primary outcome was sexual assault measured as perpetration and victimization. Secondary outcomes included sexual harassment and stalking, measured as victimization and perpetration. RESULTS: During full implementation, among students who witnessed parental intimate partner violence, the intervention was associated with significant reductions in sexual assault perpetration (ß= -0.21, p<0.01), sexual harassment perpetration (ß= -0.29, p<0.001), sexual assault victimization (ß= -0.25, p<0.01), and sexual harassment victimization (ß= -0.45, p<0.001). For students who did not witness parental intimate partner violence, the intervention was only associated with reductions in sexual harassment (ß= -0.19, p<0.001) and stalking (ß= -0.09, p<0.01) victimization. CONCLUSIONS: As implemented in the parent RCT, the bystander training was more effective at reducing violent outcomes among those who witnessed parental intimate partner violence than in those who did not witness parental intimate partner violence. TRIAL REGISTRATION: This study is registered at www. CLINICALTRIALS: gov, under identifier NCT01878097.

Sexual Violence Perpetration as a Risk Factor for Current Depression or Posttraumatic Symptoms in Adolescents.

Sexual violence perpetration (SVP), including coerced, physically forced, and alcohol- or drug-facilitated unwanted sex, occurs frequently in adolescence and may represent a risk factor for future perpetration. Sexual violence victimization (SVV) has been found to be a risk factor for increased rates of depression and posttraumatic stress disorder (PTSD); however, the associations of SVP with depression or posttraumatic stress symptoms (PTSS) have been less well described. This study examined associations between symptoms of depression and PTSS with SVP in the prior 12 months among high school students. In this cross-sectional analysis, a representative sample of public high school students (ninth-12th grades) completed self-reported surveys on peer SVP and SVV within the past year. Among 16,784 students completing surveys, 7.2% disclosed SVP against another high school student in the past 12 months; 64.4% of students disclosing SVP also experienced SVV. Both SVP and SVV, alone or in combination, were associated with a greater likelihood of symptoms of depression or PTSS. These associations were similar by sex and sexual minority status (e.g., lesbian, gay, bisexual, transgender, and queer [LGBTQ+]). These findings highlight the need for continued primary prevention efforts. Additional screening to recognize adolescent SVP can allow both early treatment of depression and PTSD and address the individual risks of SVP to reduce subsequent repeated sexual assaults.

How Does Green Dot Bystander Training in High School and Beyond Impact Attitudes Toward Violence and Sexism in a Prospective Cohort?

Bystander interventions are recognized as "promising" programming to reduce sexual violence. Gaps in current evaluations include limited follow-up post-training (beyond 24 months) and knowledge of additional bystander training during follow-up.In this prospective cohort study, nested in a cluster randomized controlled trial (RCT), three cohorts of high school (HS) seniors were recruited (Fall 2013-2015) and followed through Spring 2018 (n = 1,831). Training was based on their school cluster RCT assignment and receipt of additional Green Dot (GD) training after HS. Training was hypothesized to be associated with lower scores indicating less acceptance of violence or sexism.Sixty percent reported GD training after HS (68.7% of 986 in intervention and 50% of 845 in control conditions). No significant differences (p < .05) were observed by GD training for four of the five violence acceptance or sexism attitudinal measures at recruitment or final surveys. For "ambivalent sexism" alone was there a significant reduction in scale scores over time in the intervention versus control condition. Additional GD training after the RCT significantly reduced neither violence acceptance nor sexism scores over time.GD training does not appear to have a consistent longer-term impact on reducing violence acceptance and sexism.

Bystander Intervention Efficacy to Reduce Teen Dating Violence Among High School Youth Who Did and Did Not Witness Parental Partner Violence: A Path Analysis of A Cluster RCT.

Youth who witness parental intimate partner violence (IPV) are at increased risk of teen dating violence (DV). This analysis of secondary data investigated whether a bystander intervention program, Green Dot, was effective at reducing physical and psychological DV victimization and perpetration among youth who had and had not previously witnessed parental IPV. The parent RCT assigned 13 schools to control and 13 schools to the Green Dot intervention. Responses from 71,797 individual surveys that were completed by high school students were analyzed across three phases of a 5-year cluster randomized control trial. Multigroup path analyses revealed that students in intervention schools who witnessed parental IPV had a reduction in psychological (p < .001) and physical DV (p < .01) perpetration and psychological DV victimization (p < .01) in Phase 2 of the intervention, while those who did not witness parental IPV had a significant reduction in psychological DV victimization (p < .01). Individuals in the intervention received more training (p < .001), which was associated with lower levels of violence acceptance (p < .001). Violence acceptance was positively associated with DV victimization and perpetration (p < .001), especially for individuals who previously witnessed parental IPV. Green Dot is an effective program at reducing DV victimization and perpetration among the high-risk group of youth who previously witnessed parental IPV, largely operating through violence acceptance norms. This underscores the bystander intervention approach as both a targeted and universal prevention program.

Do Violence Acceptance and Bystander Actions Explain the Effects of Green Dot on Reducing Violence Perpetration in High Schools?

This study extends prior analyses from a 5-year multisite cluster-randomized controlled trial to examine how the previously reported effects of the Green Dot bystander-based prevention program worked to reduce violence perpetration. Bystander-based interventions are hypothesized to prevent violence by reducing violence acceptance and increasing trained participants' willingness and ability to actively engage others in violence prevention using safe and effective bystander actions to diffuse or avoid potentially violent situations. We tested this hypothesis by examining whether Green Dot worked to reduce violence through two mediators measured over time: reducing violence acceptance and increasing bystander actions. When accounting for changes in these mediators over time, the effect of this intervention on violence perpetration was hypothesized to be attenuated or explained. At baseline (spring 2010) and annually (2011-2014), all students in recruited high schools (13 intervention, 13 control) completed an anonymous survey (response rate = 83.9%). Student responses were aggregated as school-level counts for the analysis. Path analyses estimated direct and indirect effects at specific points in the implementation of the intervention. Longitudinal models were used to determine if changes in violence acceptance and bystander actions could explain or attenuate the effect of the intervention. Time-framed path model analyses indicated that the intervention worked as expected to increase bystander behaviors and reduce violence acceptance; both potential mediators were significantly associated with sexual violence perpetration. In addition, after adjusting intent-to-treat models for the hypothesized mediators, the intervention was no longer associated with violence perpetration. In conclusion, these findings indicate that this bystander intervention worked as hypothesized to reduce sexual violence perpetration by creating theory-based changes in students' violence acceptance and bystander actions.

Bystander Program Effectiveness to Reduce Violence and Violence Acceptance Within Sexual Minority Male and Female High School Students Using a Cluster RCT.

Bystander interventions have been highlighted as promising strategies to reduce sexual violence and sexual harassment, yet their effectiveness for sexual minority youth remains largely unexamined in high schools' populations. This rigorous cluster randomized control trial addresses this gap by evaluating intervention effectiveness among sexual majority and minority students known be to at increased risk of sexual violence. Kentucky high schools were randomized to intervention or control conditions. In intervention schools, educators provided school-wide Green Dot presentations (phase 1) and intensive bystander training to student popular opinion leaders (phase 2). Each spring from 2010 to 2014, students attending 26 high schools completed anonymous surveys about violence acceptance and violent events. An analytic sample of 74,836 surveys with no missing data over the 5 years was available. Sexual violence acceptance scores declined significantly over time in intervention versus control schools among all but sexual minority males. This intervention was also associated with reductions in both perpetration and victimization of sexual violence, sexual harassment, and physical dating violence among sexual majority yet not sexual minority youth. Both sexual minority and majority youth experienced reductions in stalking victimization and perpetration associated with the intervention. In this large cluster randomized controlled trial, the bystander intervention appears to work best to reduce violence for sexual majority youth. Bystander programs may benefit from explicitly engaging sexual minority youth in intervention efforts or adapting intervention programs to include attitudes that shape the experience of sexual minority high school youth (e.g., homophobic teasing, homonegativity).

Types of Trauma and Self-Reported Pain That Limits Functioning in Different-Aged Cohorts.

There is a growing body of literature that childhood or adult trauma exposure can have lifelong mental and physical health impacts. In this large cross-sectional analysis, authors investigated combinations of trauma types and pain resulting in functional limitations among women recruited into a statewide health registry. Combinations of traumas such as child physical abuse (CPA), child sexual abuse (CSA), and adult violence were hypothesized to be associated with greater likelihood of limiting pain and earlier symptom onset, relative to women with no or singular trauma exposures. Pain prevalence rates (PRs) and adjusted prevalence rate ratios (aPRRs) were highest among women experiencing multiple forms of violence (43.3% among women disclosing CPA, CSA, and adult violence; aPRR = 2.06, p < .001), intermediate for women experiencing CPA or CSA yet no adult violence (37.0%; aPRR = 1.76, p < .001), and lower among women experiencing adult violence only (27.1%; aPRR = 1.29, p < .001), relative to women never experiencing violence (20.7%). As hypothesized, the effect of combinations of trauma on chronic pain was consistently greatest for those reporting limiting pain at younger ages. Implications include the need to identify combinations of traumatic events across the life span, and to intervene early to reduce the impact of trauma on health and functioning.

Bystander Program Effectiveness to Reduce Violence Acceptance: RCT in High Schools.

Bystander-based violence prevention interventions have shown efficacy to reduce dating violence and sexual violence acceptance at the individual level yet no large randomized controlled trial (RCT) has evaluated this effect at the high-school level and over time. This rigorous cluster-randomized controlled trial addresses this gap by evaluating intervention effectiveness at both school and individual levels. Kentucky high schools were randomized to intervention or control conditions. In intervention schools educators provided school-wide 'Green Dot' presentations and bystander training with student popular opinion leaders. Each spring from 2010 to 2014; 73,044 students completed anonymous surveys with no missing data on relevant outcomes. Dating violence and sexual violence acceptance were the primary outcomes for this analysis. At the school level, slopes from linear mixed models using averaged school-level dating violence acceptance (condition-time, p < 0.001) and sexual violence acceptance (condition-time interaction, p < 0.001) differed indicating a significant reduction in the violence acceptance in the intervention relative to control schools over time and specifically in years 3 and 4 when 'Green Dot' was fully implemented. Analyses based on student's self-reported receipt of 'Green Dot' training by condition confirmed the school level finding of significant reductions in both dating violence and sexual violence acceptance in years 3 and 4 for both males and females. In this RCT we find evidence that the bystander-based violence prevention intervention 'Green Dot' works, as hypothesized and as implemented, to reduce acceptance of dating violence and sexual violence at the school and individual levels.

Can the Impact of Interpersonal Violence on Current Health-Related Quality of Life Be Mitigated?

Background: Interpersonal violence continues to affect health long after violence has ended. This analysis investigated stress, support, and health behaviors as mediators potentially explaining persistent health impacts of violence. Methods: Using a cross-sectional analysis of 12,594 women "Wellness, Health & You" (WHY) participants, authors measured violence as intimate partner violence (IPV), sexual assaults (SA), and childhood abuse (CA) by recency (current, past as an adult, or child) and number of violence forms. Current health-related quality of life (HR-QOL) was defined using the most recent survey as physical and mental health limiting usual activities for at least 4 days in the past 30 days. Adjusted prevalence rate ratios (aPRRs) for violence and HR-QOL were obtained using multiple variable log binomial regression where each mediator was included in separate models with demographic attributes. Results: In this sample of middle-aged women, half (n = 6307) had ever experienced violence (38.3% IPV, 12.9% SA, and 24.6% CA) and 19.9% reported multiple forms. IPV, SA, and CA were each associated with poorer current HR-QOL, yet, WHY participants experiencing all three forms had a sixfold increased rate of poor mental HR-QOL (Model 1: aPRRs = 6.23 [95% confidence interval, 95% CI: 4.87-7.97]) versus no violence. Stress was the mediator associated with the greatest change in aPRRs (-34.7%; Model 2: aPRR = 4.07 [95% CI: 3.13-5.30]). When all mediators were included (Model 5: aPRR = 3.01 [95% CI: 2.29-3.96]), partial mediation was observed, evidenced by nonoverlapping CIs between Models 1 and 5. Conclusions: Of relevance for interventions are findings that current health impacts of past violence may be mitigated through reducing current stress.

RCT Testing Bystander Effectiveness to Reduce Violence.

INTRODUCTION: Bystander-based programs have shown promise to reduce interpersonal violence at colleges, yet limited rigorous evaluations have addressed bystander intervention effectiveness in high schools. This study evaluated the Green Dot bystander intervention to reduce sexual violence and related forms of interpersonal violence in 26 high schools over 5 years. DESIGN: A cluster RCT was conducted. SETTING/PARTICIPANTS: Kentucky high schools were randomized to intervention or control (wait list) conditions. INTERVENTION: Green Dot-trained educators conducted schoolwide presentations and recruited student popular opinion leaders to receive bystander training in intervention schools beginning in Year 1. MAIN OUTCOME MEASURES: The primary outcome was sexual violence perpetration, and related forms of interpersonal violence victimization and perpetration were also measured using anonymous student surveys collected at baseline and annually from 2010 to 2014. Because the school was the unit of analysis, violence measures were aggregated by school and year and school-level counts were provided. RESULTS: A total of 89,707 students completed surveys. The primary, as randomized, analyses conducted in 2014-2016 included linear mixed models and generalized estimating equations to examine the condition-time interaction on violence outcomes. Slopes of school-level totals of sexual violence perpetration (condition-time, p<0.001) and victimization (condition-time, p<0.001) were different over time. During Years 3-4, when Green Dot was fully implemented, the mean number of sexual violent events prevented by the intervention was 120 in Intervention Year 3 and 88 in Year 4. For Year 3, prevalence rate ratios for sexual violence perpetration in the intervention relative to control schools were 0.83 (95% CI=0.70, 0.99) in Year 3 and 0.79 (95% CI=0.67, 0.94) in Year 4. Similar patterns were observed for sexual violence victimization, sexual harassment, stalking, and dating violence perpetration and victimization. CONCLUSIONS: Implementation of Green Dot in Kentucky high schools significantly decreased not only sexual violence perpetration but also other forms of interpersonal violence perpetration and victimization.

Frequency of Guns in the Households of High School Seniors.

BACKGROUND: In 2013, President Obama lifted the federal ban on gun violence research. The current study provides one of the first reports to estimate household gun ownership as reported by youth. METHODS: In this cohort study of 3006 high school seniors from 24 schools, we examined the frequency of household guns ownership. RESULTS: About 65% reported having at least 1 gun in their household. White males were more likely to have a gun and to have more guns than other demographically characterized groups. After adjustment for race and sex, those of higher income, who lived in suburban or rural areas, identified as being exclusively attracted to the opposite sex, and in a romantic relationship, were more likely to have a gun in their household. Having a gun was not associated with increasing symptoms of depression or current poor physical or mental health. CONCLUSIONS: Whereas we cannot determine gun types or reasons for having a gun, this research indicates that high school seniors are aware of and may have access to guns for use other than their intended purpose. Household gun ownership among students at higher risk for violence may pose safety challenges for communities and schools.

Do Guns in the Home Predict Gender and Relationship Attitudes? An Exploratory Study.

This study explores the potential relationship of guns in students' homes with attitudes indicative of tolerance of violence, negative attitudes toward women and their roles, and attitudes suggestive of myths regarding sexual assault. Seniors in Kentucky high schools whose families possessed guns (N=1749) produced higher scores on scales measuring these variables as well as on scales of relationship dependency and religious involvement than seniors whose families did not own guns (N=912). Students whose families owned more than 10 guns tended to score highest on these measures compared with students whose families owned no or a few guns. Because of lower effect sizes, these significant associations require further investigation.

Dating violence victimization and perpetration rates among high school students.

This school-based sample provides the largest estimate of physical and psychological dating violence (DV) victimization and the only report of DV perpetration among high school students. Among 14,190 students in relationships, 33.4% disclosed DV by a partner (victimization) and 20.2% used these same behaviors against a partner (perpetration) in the past 12 months. Physical DV victimization (13%) was less frequently disclosed than psychological DV (23%). Rates of DV victimization and perpetration were highest among females, those receiving free or reduced-price meals, those not exclusively attracted to the opposite sex, students reporting parental or guardian partner violence, binge drinking, and bullying.

Challenge and opportunity in evaluating a diffusion-based active bystanding prevention program: Green Dot in high schools.

Increasing attention has recently been paid to the development of prevention programs designed to actively engage bystanders in prevention efforts to reduce the risk of sexual and dating violence; yet, few evaluations have been conducted. Our proposed plan to rigorously evaluate a randomized intervention trial of the Green Dot bystander program as it is implemented in high schools across Kentucky is presented. We highlight the value of measuring violence victimization and perpetration outcomes, capturing actual and observed student bystander behaviors, and testing the diffusion of Green Dot training through students' social networks.