Exploring adolescent-adult connections, coping, and safety among minoritized youth in neighborhoods impacted by community violence.

Dyadic interviews were conducted with 32 youth ages 13-21 and their self-identified key adult supports to illuminate how adult supports help protect youth in communities impacted by high levels of violence. Interview transcripts were analyzed using thematic content analysis. Youth described choosing social interactions carefully, avoiding high-violence areas, and keeping busy with activities. Many youths discussed the necessity of minimizing contact with peers to avoid violence, resulting in isolation from friends and increased engagement with family at home. Adult supports reflected upon an intergenerational transfer of violence avoidance, safety planning, and coping strategies through sharing their own lived experiences. Dyads highlighted the need for intergenerational programming to address social isolation and build supportive social networks.

Exploring the Impact of Racism on Black Youth: A Multidimensional Examination of Discriminatory Experiences Across Place and Time.

PURPOSE: Community violence disproportionally impacts Black youth. Experiences of racism and discrimination may create additional challenges for youth recovering from violence exposure. This study used ecological momentary assessment to elucidate how perceptions of racism and social support influence health and safety outcomes among Black youth following violence exposure. METHODS: Twenty-five Black youth (14-19 years old, 60% female) who had witnessed violence within the past three months completed a baseline survey that assessed discrimination experiences, social support, post-traumatic stress symptoms (PTS), and perceived safety. Youth completed ecological momentary assessments three times daily for two weeks about the place they were in, people they were with, their current emotional state, and in-the-moment racism perceptions. Multilevel models estimated the relationship between overall and time-varying perceptions of racism and social support, PTS symptoms, and perceived safety. RESULTS: Overall, 76% of youth reported at least one discrimination experience at baseline. Prior discrimination was associated with higher PTS (B = 1.86, p = .001) and depressive symptoms (B = 0.13, p = .013) at baseline. Youth who reported higher overall perceptions of racism in-the-moment reported higher PTS (B = 0.50, p = .002) and lower perceived safety (B = -0.53, p = .001). In-the-moment perceptions of racism were associated with lower perceived safety in that place (B = -0.09, p < .01). Emotional and instrumental support were associated with lower PTS and higher perceived safety (p < .05). DISCUSSION: Experiences of racism and being in discriminatory places impacted youth's depressive symptoms, PTS symptoms, and perceived safety. Interventions attuned to in-the-moment experiences of racism, and that leverage social support, are needed to support Black youth exposed to violence and discrimination.

Adolescent-Adult Social Networks and Experiences of Violence Among Black Youth in Neighborhoods With High Levels of Community Violence.

PURPOSE: Adult support is inversely linked to health-affecting risk behaviors. This study aimed to describe adolescent-adult support network structure and quality, and to analyze associations among network properties, strength of emotional and instrumental support, and violence involvement among predominantly Black youth residing in neighborhoods with high levels of community violence. METHODS: One hundred six youth from urban neighborhoods with high levels of community violence in Pittsburgh, PA completed egocentric social network surveys describing adult supports, measures of support across contexts, and past 30-day violence perpetration, victimization, and witnessing. Forty youth-identified adults completed complementary social network surveys. Poisson regression examined associations among strength of social support, adults' violence experiences, and youths' violence experiences. RESULTS: Mean youth participant age was 16.7 years, 56% self-identified as female, and 84% as Black or African-American. Youth and adult participants reported high levels of violence exposure and involvement. Youth identified a mean of 4.8 adult supports. Identifying at least one immediate family member in their network was inversely related to violence perpetration (adjusted incidence rate ratio [aIRR] 0.44, 95% confidence interval [CI] 0.22-0.89), victimization (aIRR 0.42, 95% CI 0.25-0.72), and witnessing (aIRR 0.48, 95% CI 0.35-0.64). The percent of adult supports involved in violence was directly associated with violence perpetration (aIRR 1.81, 95% CI 1.07-3.07), victimization (aIRR 1.95, 95% CI 1.09-3.45), and witnessing (aIRR 1.85, 95% CI 1.25-2.73). Few associations emerged between the structure of youth-reported adolescent-adult social networks and violence. DISCUSSION: Network-based interventions combined with healing-centered services attuned to violence experiences among Black youth and their adult supports may offer opportunities to leverage youths' existing adult support network and reduce violence.

Using machine learning to estimate atmospheric Ambrosia pollen concentrations in Tulsa, OK.

This article describes an example of using machine learning to estimate the abundance of airborne Ambrosia pollen for Tulsa, OK. Twenty-seven years of historical pollen observations were used. These pollen observations were combined with machine learning and a very complete meteorological and land surface context of 85 variables to estimate the daily Ambrosia abundance. The machine learning algorithms employed were Least Absolute Shrinkage and Selection Operator (LASSO), neural networks, and random forests. The best performance was obtained using random forests. The physical insights provided by the random forest are also discussed.