Screen time and mental health: a prospective analysis of the Adolescent Brain Cognitive Development (ABCD) Study.

BACKGROUND: Despite the ubiquity of adolescent screen use, there are limited longitudinal studies that examine the prospective relationships between screen time and child behavioral problems in a large, diverse nationwide sample of adolescents in the United States, which was the objective of the current study. METHODS: We analyzed cohort data of 9,538 adolescents (9-10 years at baseline in 2016-2018) with two years of follow-up from the Adolescent Brain Cognitive Development (ABCD) Study. We used mixed-effects models to analyze associations between baseline self-reported screen time and parent-reported mental health symptoms using the Child Behavior Checklist, with random effects adjusted for age, sex, race/ethnicity, household income, parent education, and study site. We tested for effect modification by sex and race/ethnicity. RESULTS: The sample was 48.8% female and racially/ethnically diverse (47.6% racial/ethnic minority). Higher total screen time was associated with all mental health symptoms in adjusted models, and the association was strongest for depressive (B = 0.10, 95% CI 0.06, 0.13, p < 0.001), conduct (B = 0.07, 95% CI 0.03, 0.10, p < 0.001), somatic (B = 0.06, 95% CI 0.01, 0.11, p = 0.026), and attention-deficit/hyperactivity symptoms (B = 0.06, 95% CI 0.01, 0.10, p = 0.013). The specific screen types with the greatest associations with depressive symptoms included video chat, texting, videos, and video games. The association between screen time and depressive, attention-deficit/hyperactivity, and oppositional defiant symptoms was stronger among White compared to Black adolescents. The association between screen time and depressive symptoms was stronger among White compared to Asian adolescents. CONCLUSIONS: Screen time is prospectively associated with a range of mental health symptoms, especially depressive symptoms, though effect sizes are small. Video chat, texting, videos, and video games were the screen types with the greatest associations with depressive symptoms. Future research should examine potential mechanisms linking screen use with child behavior problems.

Prior incarceration length and edentulism among formerly incarcerated older adults in the United States.

BACKGROUND: This study investigated the association between prior incarceration length and edentulism among US adults 55 years and older. Analyses explored indirect factors such as wealth, smoking status, mental health, and chronic health conditions that may explain this relationship. In addition, the study analyzed how associations between incarceration and edentulism vary by race and ethnicity. METHODS: The authors used data from the 2012-2014 Health and Retirement Study (unweighted N = 11,630; weighted N = 72,872,877) to assess the relationship between incarceration duration and edentulism through multivariable logistic regression. The Karlson-Holm-Breen method evaluated indirect effects, and multiplicative interaction terms examined variations by race and ethnicity. RESULTS: Net of control variables analyses showed a positive association between having been incarcerated for more than 1 month and higher odds of edentulism. However, this association was rendered statistically nonsignificant after accounting for wealth, current smoking status, mental health, and chronic disease. Collectively, wealth and smoking explained approximately 60% of the association between prior incarceration length and edentulism. Racial moderation models indicated that longer incarceration times increased edentulism likelihood in non-Hispanic Whites specifically. CONCLUSIONS: To the authors' knowledge, this is the first study on the association between prior incarceration length and edentulism among older adults. Study findings indicated the relationship between incarceration and edentulism was explained by higher wealth and current smoking status. PRACTICAL IMPLICATIONS: These findings highlight the need for adequate access to oral health care services for formerly incarcerated older adults to improve oral health and enhance their overall health and quality of life.

Storage of firearms in vehicles: findings from a sample of firearm owners in nine U.S. states.

BACKGROUND: In recent years, there has been a growing number of thefts of firearms stored in vehicles. Despite this trend, there is limited research on firearm storage patterns in vehicles in the United States. This study investigates these storage patterns and evaluates the relationship between the surge in firearm purchases after March 2020 and the practice of storing firearms in vehicles. METHODS: Firearm storage practices were classified into four categories: (a) no vehicle storage, (b) locked vehicle storage only, (c) unlocked vehicle storage only, and (d) both locked and unlocked vehicle storage. Multinomial logistic regression analyses were conducted to determine the association between vehicle firearm storage practices and the main independent variable (firearm purchases since March 2020), adjusting for covariates. RESULTS: Those who purchased a firearm since March 2020 were significantly more likely to store at least one firearm in a vehicle unlocked only (RRR = 2.41, 95% CI 1.45-3.99) or both locked and unlocked (RRR = 2.57, 95% CI .180-3.67) compared to the reference category of no vehicle storage. CONCLUSION: Individuals who purchased a firearm after March 2020 were more likely to report storing a firearm in a vehicle. Given the limited research on patterns of firearm storage in vehicles, these findings provide novel evidence suggesting that firearm purchases following the March 2020 firearm purchasing surge may have fomented behaviors that increased the likelihood of firearm storage in automobiles. Moving forward, there is a need for additional quantitative and qualitative research that can better understand patterns and motivations of firearm storage in vehicles.

From individual motivation to substance use initiation: A longitudinal cohort study assessing the associations between reward sensitivity and subsequent risk of substance use initiation among US adolescents.

BACKGROUND: Substance use in youth remains a pressing problem in the United States. Existing studies have shown the importance of neuropathways responsible for affective response and reward motivation in adolescents' substance use initiation and maintenance. However, limited observational studies have explored the relationship between aspects of behavioral motivation traits and the likelihood of substance use initiation in adolescents. In this prospective cohort study, we assessed the associations between behavioral motivation traits based on the Behavioral Inhibition and Approach Systems (BIS-BAS) Scale and substance use initiation using data from the Adolescent Brain Cognitive Development (ABCD) study. METHOD: In the 9216 eligible sample population, we assessed the associations between mean Behavioral Inhibition System (BIS) / Behavioral Approach System (BAS) scores measured at year 2 of the ABCD study and substance use initiation at year 3 of the ABCD study using multivariable logistic regressions adjusting for ABCD study site, sampling weights, as well as sociodemographic characteristics. RESULTS: We found that higher BIS mean score was associated with higher odds of initiating substance use at year 3 (AOR=1.20, 95 % CI: 1.03, 1.40). Out of three BAS measure categories, only BAS Fun-seeking mean score was positively associated with higher odds of initiating substance use at year 3 (AOR=1.23, 95 % CI: 1.07, 1.43). CONCLUSION: Our study showed that inhibitory and fun-seeking behavioral tendencies are associated with an increased likelihood of substance use initiation in adolescents. Our findings suggest a potential pathway linking emotional traits to early substance initiation in adolescents.

Gender Identity Disparities in Early Adolescent Sleep: Findings from the Adolescent Brain Cognitive Development Study.

Purpose: Our aim was to examine associations between transgender identity and sleep disturbance in a demographically diverse, national sample of U.S. early adolescents. Methods: We conducted a cross-sectional analysis of the Adolescent Brain Cognitive Development Study from Year 3 (2019-2021, n = 10,277, 12-13 years) to investigate the association between transgender identity and caregiver-reported measures of their adolescent's sleep, assessed by the Sleep Disturbance Scale for Children. Results: Transgender adolescents had a higher risk of overall sleep disturbance and symptoms of insomnia and excessive sleepiness. Furthermore, per caregiver report, transgender adolescents were more likely to have shorter sleep duration categories; particularly concerning is the significant risk of <5 hours of sleep for transgender adolescents compared with their cisgender peers. Conclusion: These findings indicate that transgender adolescents had worse caregiver-reported sleep outcomes compared to cisgender peers. This study highlights the need for screenings and interventions targeted at improving sleep among transgender adolescents.

Mapping eating disorders in adolescents and young adults: an investigation of geographic distribution and access to care in Ontario, Canada.

BACKGROUND: There is limited research on the spatial distribution of eating disorders and the proximity to available eating disorder services. Therefore, this study investigates the distribution of eating disorders among adolescents and young adults in Ontario, Canada, with a specific focus on geographic disparities and access to publicly-funded specialized eating disorder services. METHODS: A community sample of 1,377 adolescents and young adults ages 16-30 across Ontario between November and December 2021 participated in this study and completed the Eating Disorder Examination Questionnaire. Utilizing Geographic Information System (GIS) technology, we mapped the geographic prevalence of eating disorders and examined proximity to specialized eating disorder services. Multiple linear and logistic regression analyses were utilized to determine the association between geographic region and eating disorder symptomatology. Additionally, t-tests were utilized to examine differences between time/distance to specialized services and clinical risk for eating disorders. RESULTS: Applying geospatial analysis techniques, we detected significant spatial clusters denoting higher eating disorder scores in rural areas and areas with fewer specialized services. Likewise, our findings report disparities between rural and urban areas, suggesting that rural regions exhibit elevated rates of eating disorders. There were no associations between distance/time to services and eating disorder symptomology. CONCLUSIONS: The discrepancies in eating disorder symptomology between urban/rural may stem from stigma and unique socio-cultural contexts in rural communities. The study underscores the need for targeted intervention, including telehealth, in addressing the eating disorder challenges faced by adolescents and young adults in rural regions.

This study explores how common eating disorders are among adolescents and young adults in Ontario, Canada, with a specific focus on the geographic disparities of eating disorders. This study uses mapping technology to assess where eating disorders were more common and how close these areas were to specialized eating disorder treatment services. The findings showed that places with fewer services, especially rural areas, had higher rates of eating disorders. However, there wasn't a clear link between how far people lived from these services and the severity of their eating disorders. This may suggest that those in rural areas might struggle more with eating disorders due to greater stigma and different social and cultural factors compared to urban areas. This study emphasizes the need for targeted interventions, like telehealth, to address these disparities. This research is pivotal in guiding equitable healthcare solutions for eating disorders, particularly in underserved rural communities.

Screen time, problematic screen use, and eating disorder symptoms among early adolescents: findings from the Adolescent Brain Cognitive Development (ABCD) Study.

PURPOSE: Emerging research evidence suggests positive relationships between higher screen time and eating disorders. However, few studies have examined the prospective associations between screen use and eating disorder symptoms in early adolescents and how problematic screen use may contribute to symptom development. METHODS: We analyzed prospective cohort data from the Adolescent Brain Cognitive Development (ABCD) Study (N = 10,246, 2016-2020, ages 9-14). Logistic regression analyses were used to estimate the longitudinal associations between baseline self-reported screen time and eating disorder symptoms in year two. Logistic regression analyses were also used to estimate cross-sectional associations between problematic screen use in year two (either problematic social media or mobile phone use) and eating disorder symptoms in year two. Eating disorder symptoms based on the Kiddie Schedule for Affective Disorders and Schizophrenia (KSADS-5) included fear of weight gain, self-worth tied to weight, engaging in compensatory behaviors, binge eating, and distress with binge eating. RESULTS: Each additional hour of total screen time and social media use was associated with higher odds of fear of weight gain, self-worth tied to weight, compensatory behaviors to prevent weight gain, binge eating, and distress with binge eating two years later (odds ratio [OR] 1.05-1.55). Both problematic social media and mobile phone use were associated with higher odds of all eating disorder symptoms (OR 1.26-1.82). CONCLUSIONS: Findings suggest greater total screen time, social media use, and problematic screen use are associated with more eating disorder symptoms in early adolescence. Clinicians should consider assessing for problem screen use and, when high, screen for disordered eating. LEVEL OF EVIDENCE: Level III: Evidence obtained from well-designed cohort or case-control analytic studies.

Creatine monohydrate use is prospectively associated with muscle dysmorphia symptomatology.

This study aimed to determine the prospective association between creatine monohydrate use and muscle dysmorphia symptomatology among adolescents and young adults in Canada. Data from 912 adolescents and young adults from the Canadian Study of Adolescent Health Behaviors were analyzed. Creatine monohydrate use in the past 12 months was assessed at Wave 1, and muscle dysmorphia symptomatology was measured using the Muscle Dysmorphic Disorder Inventory (MDDI) at Wave 1 and Wave 2. The prospective associations between creatine monohydrate use and the MDDI total score and subscale scores were determined using linear regression analyses. Regression analyses controlled for relevant demographic identifiers, prior substance use, and the corresponding Wave 1 MDDI variable. Creatine monohydrate use at Wave 1 was prospectively associated with both total muscle dysmorphia symptomatology (B 1.34, 95 % CI 0.27, 2.42) and greater Appearance Intolerance (B 0.52, 95 % CI 0.02, 1.03) at Wave 2. Importantly, these findings were independent of prior muscle dysmorphia symptomatology, lifetime anabolic-androgenic steroid use, lifetime cigarette use, and frequency of alcohol use. Creatine monohydrate is commonly used among adolescents and young adults. Findings from this study are among the first to document that creatine monohydrate use may be a risk factor for the development of muscle dysmorphia symptomatology among adolescents and young adults. Health and mental health care professionals may consider assessing for both creatine monohydrate use and muscle dysmorphia symptomatology among adolescents and young adults.

Sexual identity is associated with adverse childhood experiences (ACEs) in US early adolescents.

OBJECTIVE: To determine disparities in adverse childhood experiences (ACEs) by sexual identity in a national cohort of early adolescents. METHODS: We analyzed cross-sectional data from year 2 of the Adolescent Brain Cognitive Development Study (N=10,934, 2018-2020, ages 10-14 years). Disparities in ACE score across lesbian, gay, or bisexual (LGB), not sure, and heterosexual adolescents were assessed using multinomial logistic regression analyses. Logistic regressions estimated the associations between sexual identity and each individual ACE. Analyses were adjusted for potential confounders. RESULTS: In adjusted models, LGB adolescents had higher risk of experiencing 2, 3, or ≥4 ACEs (Relative Risk Ratios [RRR] =1.57, 95% CI 1.01-2.42), 3 (RR=1.78, 95% CI 1.100-2.88), or ≥4 ACEs (RRR=3.20, 95% CI 1.92-5.32), and not sure adolescents had a higher risk of having ≥4 ACEs (RRR=2.17, 95% CI 1.22-3.87), compared to heterosexual adolescents. LGB and not sure adolescents had higher risks of reporting emotional abuse ("yes" OR =4.21, 95% CI 1.84-9.61; "maybe" OR=6.20, 95% CI 2.91-13.19) and parent mental illness ("yes" OR=1.95, 95% CI 1.48-2.57; "maybe" OR=1.63, 95% CI 1.21-2.18) compared to heterosexual adolescents. CONCLUSIONS: LGB adolescents and those questioning their sexual identity were at greater risk of having higher ACE scores, with LGB adolescents experiencing the highest risk of experiencing ACEs. LGB adolescents also had higher odds of reporting emotional and parent mental illness. Recognizing this heightened risk of ACEs in early adolescence is critical for designing clinic and school-based interventions.

Adverse Childhood Experiences and Adult Household Firearm Ownership.

This survey study examines exposure to abuse, neglect, and household dysfunction during childhood and likelihood of gun ownership in adulthood.

Adverse Childhood Experiences and Police Contact in Canada.

A growing body of research has demonstrated that adverse childhood experiences (ACEs) are a risk factor for criminal justice system contact. However, much of this research is limited by (1) being conducted in the United States and (2) a lack of details on specific types of harmful experiences of criminal justice system contact, such as police contact characterized by intrusion or harassment. Using survey data from 940 individuals aged 16 to 30 in Canada from the Canadian Study of Adolescent Health Behaviors, this study investigates the relationship between ACEs and police contact, focusing on encounters involving intrusion or harassment. Results from logistic and multinomial logistic regression analyses reveal that individuals with high ACE exposure, particularly those with four or more ACEs, are more likely to have police contact, including experiences of intrusion and harassment. The results are significant in understanding the interplay between childhood trauma and later encounters with the criminal justice system, emphasizing the need for trauma-informed approaches in policing and healthcare. The study highlights the importance of early interventions to mitigate the effects of ACEs and prevent adverse outcomes in police interactions.

Racial disparities in death of someone close during pregnancy: Findings from the Pregnancy Risk Assessment Monitoring System (PRAMS), 2017-2021.

PURPOSE: The COVID-19 pandemic increased the mortality rate in the U.S. and exposed many to the unexpected death of someone close. No prior research has assessed whether the COVID-19 pandemic was followed by an increase in bereavement during pregnancy, and whether patterns varied by race and ethnicity. METHODS: Using data from the Pregnancy Risk Assessment Monitoring System from 2017-2021 across 23 U.S. sites (N = 107,226), we assessed trends in the odds of experiencing the death of someone close before and after the onset of the COVID-19 pandemic. RESULTS: Findings revealed an increased percentage of women who reported having someone close to them die in the year prior to childbirth after the start of the COVID-19 pandemic (March 2020 or later) (aPR=1.121, 95 % CI (1.079 - 1.165). Analysis by mother's race and ethnicity showed death of someone close increased significantly after the COVID-19 pandemic for Hispanic (aPR = 1.192, 95 % CI = 1.062, 1.337), non-Hispanic Black (aPR = 1.115, 95 % CI = 1.015 - 1.225), and American Indian-Alaskan Native pregnant women (aPR = 1.391, 1.023 - 1.891) compared to White, Non-Hispanic pregnant women. CONCLUSIONS: Increased bereavement among pregnant women during the COVID-19 pandemic warrants routine grief screening and response training in prenatal care.

Family conflict and less parental monitoring were associated with greater screen time in early adolescence.

AIM: The current study investigated the prospective relationships between parental monitoring, family conflict, and screen time across six screen time modalities in early adolescents in the USA. METHODS: We utilised prospective cohort data of children (ages 10-14 years) from the Adolescent Brain Cognitive Development (ABCD) Study (years baseline to Year 2 of follow-up; 2016-2020; N = 10 757). Adjusted coefficients (B) and 95% confidence intervals (CIs) were estimated using mixed-effect models with robust standard errors. RESULTS: A higher parental monitoring score was associated with less total screen time (B = -0.37, 95% CI -0.58, -0.16), with the strongest associations being with video games and YouTube videos. Conversely, a higher family conflict score was associated with more total screen time (B = 0.08, 95% CI 0.03, 0.12), with the strongest associations being with YouTube videos, video games, and watching television shows/movies in Years 1 and 2. CONCLUSION: The current study found that greater parental monitoring was associated with less screen time, while greater family conflict was linked to more screen time. These results may inform strategies to reduce screen time in adolescence, such as improving communication between parents and their children to strengthen family relationships.

Bedtime Screen Use Behaviors and Sleep Outcomes in Early Adolescents: A Prospective Cohort Study.

PURPOSE: To determine prospective associations between bedtime screen use behaviors and sleep outcomes one year later in a national study of early adolescents in the United States. METHODS: We analyzed prospective cohort data from 9,398 early adolescents aged 11-12 years (48.4% female, 45% racial/ethnic minority) in the Adolescent Brain Cognitive Development Study (Years 2-3, 2018-2021). Regression analyses examined the associations between self-reported bedtime screen use (Year 2) and sleep variables (Year 3; self-reported sleep duration; caregiver-reported sleep disturbance), adjusting for sociodemographic covariates and sleep variables (Year 2). RESULTS: Having a television or Internet-connected electronic device in the bedroom was prospectively associated with shorter sleep duration one year later. Adolescents who left their phone ringer activated overnight had greater odds of experiencing sleep disturbance and experienced shorter sleep duration one year later, compared to those who turned off their phones at bedtime. Talking/texting on the phone, listening to music, and using social media were all prospectively associated with shorter sleep duration, greater overall sleep disturbance, and a higher factor score for disorders of initiating and maintaining sleep one year later. DISCUSSION: In early adolescents, several bedtime screen use behaviors are associated with adverse sleep outcomes one year later, including sleep disturbance and shorter weekly sleep duration. Screening for and providing anticipatory guidance on specific bedtime screen behaviors in early adolescents may be warranted.

History of Incarceration and Dental Care Use Among Older Adults in the United States.

INTRODUCTION: Dental care is a critical component of healthy aging; however, emerging evidence suggests that having been previously incarcerated is a risk factor for not using dental care services. This study investigates the relationship between prior incarceration and dental care among older adults and assesses whether wealth and dental insurance explain this relationship. METHODS: Data are from the Health and Retirement Study, a nationally representative sample of community-dwelling older adults in the United States, collected in 2012 and 2014. Multivariable logistic regression is used to assess the relationship between a history of incarceration and dental care. Mediation analyses were conducted using the Karlson-Holm-Breen method of indirect effects in non-linear models. Statistical analyses were conducted from February to April 2024. RESULTS: Adjusting for potential confounding variables, a respondent's prior incarceration is associated with a 25% lower odds of dental care use (adjusted odds ratio [aOR] = 0.748, 95% CI = 0.624, 0.896). The relationship between incarceration and dental care use is fully mediated-over 90% is explained by-wealth and having dental care insurance. Prior incarceration decreased the likelihood of dental care only among non-Hispanic White respondents. CONCLUSIONS: The findings offer new evidence that prior incarceration is a risk factor for lacking the ability to utilize dental care among older adults and suggest that broader consequences of incarceration for wealth accumulation and access to dental insurance underpin this relationship. These results suggest the urgent need to expand access to affordable dental care services for older adults with a history of incarceration.

Perinatal Health Outcomes Among Women on Community Supervision: A Scoping Review.

The purpose of this scoping review is to review the extant literature regarding perinatal health outcomes for women on community supervision in the United States. PubMed, CINAHL, Scopus, PsycINFO, and Public Health were searched for peer-reviewed articles published in the United States from January 1, 1970, to March 7, 2023. After removal of duplicates and review of 1,412 article titles and abstracts, 19 articles were retrieved for full-text review; this yielded 4 studies for inclusion. Studies range in size from 10 to 292 participants (N = 405) and only two reported geographic locations. Three studies comprised probation or parole and two studies included court-mandated treatment for substance use. All studies examined outcomes during the postpartum period, such as mood disorder or substance use severity. No studies evaluated the health of women during pregnancy and/or childbirth. To enhance health equity and reduce maternal morbidity and mortality among women on community supervision, more inclusive research that examines health outcomes during the perinatal period is needed. Furthermore, there must be interventions that address the social determinants of health, racial and systemic discrimination, socioeconomic barriers, and violence that are often experienced among women with criminal justice system involvement.

Officer gunpoint during police stops: Repercussions for youth mental health and perceived safety.

Youth-police contact is increasingly acknowledged as a stressor and a racialized adverse childhood experience that can undermine youths' mental health. The present study investigates a particularly distressing feature of youths' direct and witnessed in-person police stops-officer gunpoint (i.e., officers drawing of firearms and pointing them at youth, their peers, or other community members). We examine patterns of youths' officer gunpoint exposure and associations with youth mental health and safety perceptions. Data come from the Survey of Police-Adolescent Contact Experiences (SPACE), a cross-sectional survey of a community-based sample of Black youth ages 12-21 in Baltimore City, Maryland (n = 335), administered from August 2022 to July 2023. Findings indicate that ~33% of youth reporting in-person police stops had been exposed to officer gunpoint during stops. Officer gunpoint was significantly and positively associated with being male, unemployed, having an incarcerated parent, living in a neighborhood with greater disorder, and having been directly stopped by police, in addition to youth delinquency and impulsivity. Net of covariates, experiencing officer gunpoint was associated with a significantly higher rate of youth emotional distress during stops. Significant associations between officer gunpoint and youths' current police violence stress, police avoidance, and diminished safety perceptions also emerged and were largely explained by youths' heightened emotional distress at the time of police stops. Trauma-informed approaches are needed to mitigate the mental health harms of youth experiencing officer gunpoint.

Historical Redlining and Contemporary Violent Victimization Over the Life Course.

INTRODUCTION: This study assesses the relationship between living in historically redlined communities and the incidence of violent victimization and examines differences in this relationship across race and ethnicity. METHODS: Data are from the U.S. National Longitudinal Study of Adolescent to Adult Health (Add Health) from Waves I (1994-1995; ages 12-17), III (2001; ages 18-26), IV (2008-2009; ages 24-32), and V (2016-2018; ages 34-44). Multi-level, within-between regression models were used to assess the relationship between residence in historically redlined areas and violent victimization from adolescence to adulthood. The study includes 8,266 participants, and data analysis was conducted in 2024. RESULTS: Respondents who lived in redlined areas throughout adolescence and adulthood reported a 4.8% higher average probability of violent victimization relative to those who never lived in redlined areas. Respondents who moved from a non-redlined to a redlined area across waves also reported a 2.2% higher probability of victimization, on average. Although Black and Hispanic respondents were significantly more likely than their White peers to live in a redlined area and report violent victimization at each stage of the life course, the probability of experiencing victimization while living in a redlined area was similar between racial and ethnic groups. CONCLUSIONS: These findings underscore the profound and enduring consequences of New Deal-era redlining policies for present-day safety, emphasizing the urgent need to confront and rectify historical injustices to enhance contemporary safety and well-being.

Police Violence Exposure and Traumatic Stress Among Youth: A Systematic Review.

Youth exposure to violence increases the risk of poor mental and physical health outcomes lasting into adulthood. Traumatic stress is an outcome of particular concern as the physiological stress response impacts the developing brain. Recently, youth exposure to police violence has been conceptualized as an adverse childhood experience that may impact traumatic stress. To examine this possibility, we conducted a systematic review, drawing upon five databases to gather the existing quantitative and qualitative peer-reviewed research on exposure to police violence and traumatic stress in youth. Searches yielded 27 relevant articles utilizing various study designs: thirteen quantitative, thirteen qualitative, and one mixed method. Twenty-six of the 27 studies found evidence of a relationship between police violence exposure and traumatic stress in youth. Police violence was associated with youth traumatic stress across three types of exposures: direct, vicarious, and anticipated. Studies also explored differential impacts by race and gender. The review revealed current gaps in the literature, such as a lack of data on select sociodemographic groups (e.g., rural youth, LGBTQ+ youth) and potential protective factors (e.g., resilience and school connectedness). In line with the findings, we put forth a research agenda as well as policy and practice recommendations to improve police interactions with youth and mental health services for youth who have been exposed to police violence. Recommendations include improving systematic data collection to track all types of police violence exposure, creating spaces for positive police interactions with youth, and training mental health practitioners to support youth exposed to police violence.

Use of photo filters is associated with muscle dysmorphia symptomatology among adolescents and young adults.

It has been documented in the literature that the use of photo filters to alter one's appearance may negatively impact body image and increase the risk for thinness-oriented disordered eating behaviors. However, the prior research has neglected to investigate the association between use of photo filters and muscle dysmorphia symptomatology, which was the aim of this study. Data from the Canadian Study of Adolescent Health Behaviors (2022; N = 912), a national study of adolescents and young adults in Canada, were analyzed. Linear regression analyses revealed that the use of photo filters was associated with greater muscle dysmorphia symptomatology, including total symptomatology and Appearance Intolerance, among the overall sample. Gender significantly moderated the association between photo filter use and muscle dysmorphia symptomatology, whereby boys and young men, compared to girls and young women, who reported photo filter use had greater Drive for Size and Functional Impairment symptomatology. Findings expand prior research by emphasizing that photo filter use is related to muscularity-oriented body image concerns and behaviors. Future research is needed to elucidate the mechanisms that underpin this association.