Coping self-efficacy mediates effects of posttraumatic distress on communal coping in parent-adolescence dyads after floods.

Social cognitive theory provides a framework of human agency during environmental challenges, with coping self-efficacy (CSE) as an important construct underlying adaptation. We examined two alternative models involving CSE as a mediator of the association between posttraumatic stress symptoms (PTSS) and communal coping among parent-youth dyads after severe floods using Bayesian dyadic multilevel modeling. The first model included PTSS as the independent variable and communal coping as the dependent variable (disaster distress model). The independent and dependent variables were replaced for each other in the second model (communal coping model). We used data from 485 parent-youth dyads who experienced floods between 2015 and 2016 in Texas, USA. Parents of children (69% women) aged 10-19 years old, and their oldest child (53% male; Mean age = 13.75) in that age range were recruited. We assessed PTSS, CSE, and communal coping for parents and youths. Results favored the disaster distress model over the communal coping model. In the disaster distress model, results demonstrated that CSE declines as PTSS increases, predicting decreased communal coping. This mediation effect of CSE is stronger for youths compared to parents, indicating that children's CSE is affected more by PTSS.

The Relationship Between Physical and Mental Health Outcomes in Children Exposed to Disasters.

PURPOSE OF REVIEW: This paper reviews literature on the influence of disaster exposure on the intersection between physical and mental health in children, including risk and protective factors. We provide an update on recent studies and conclude with recommendations for future research. RECENT FINDINGS: The limited existing research on this topic suggests that disasters can influence short and long-term physical and mental health of children. Although few studies explore both mental and physical health in the same study, studies that assess both show that they co-occur. Pre-existing conditions, severity of disaster exposure, socioeconomic status, and gender may influence the relation between disaster exposure and physical and mental health. Despite the growing number of studies exploring mental and physical health symptoms together in children post-disaster, a dearth of research examines this relationship in terms of nuances by age and developmental stage, longitudinal mechanisms, and risk and protective factors.

Addressing Disaster Exposure Measurement Issues With Latent Class Analysis.

Disaster exposure can put survivors at greater risk for subsequent mental health (MH) problems. Within the field of disaster MH research, it is important to understand how the choice of analytic approaches and their implicit assumptions may affect results when using a disaster exposure measure. We compared different analytic strategies for quantifying disaster exposure and included a new analytic approach, latent class analysis (LCA), in a sample of parents and youth. Following exposure to multiple floods in Texas, a sample of 555 parents and 486 youth were recruited. Parents were predominantly female (70.9%) and White (60.8%). Parents were asked to have their oldest child between the ages of 10 and 19 years old participate (M = 13.74 years, SD = 2.57; 52.9% male). Participants completed measures on disaster exposure, posttraumatic stress, depression, and anxiety. The LCA revealed four patterns of exposure in both parents and youth: high exposure (15.5% parent, 9.5% child), moderate exposure (19.8% parent, 28.2% child), community exposure (45.9% parent, 34.4% child), and low exposure (18.8% parent, 27.8% child). In terms of MH, there were similarities across analytic approaches, but the LCA highlighted a threshold effect, with the high exposure class doing worse than all others, d = 1.12. These results have important implications in understanding the different exposure experiences of survivors and the linkage to MH outcomes. The findings are also informative in the development and use of screening tools used in postdisaster contexts in determining who may or may not need MH services.

Spanish Abstracts by Asociación Chilena de Estrés Traumático (ACET) Abordando los Problemas de Medición de la Exposición a los Desastres con un Análisis de Clases Latentes ABORDANDO LA MEDICION DE LA EXPOSICION A DESASTRES La exposición a los desastres puede poner a los sobrevivientes en un riesgo más alto de posteriores problemas de salud mental (SM). En el campo de investigación de la SM sobre desastres, es importante entender como la elección de perspectivas analíticas y sus supuestos implícitos podrían afectar los resultados cuando se usa una medida de exposición al desastre. Comparamos estrategias analíticas diferentes para cuantificar la exposición al desastre e incluimos una perspectiva analítica nueva, análisis de clase latente (LCA en sus siglas en inglés), en una muestra de padres y jóvenes. Luego de la exposición a numerosas inundaciones en Texas, se reclutó una muestra de 555 padres y 486 jóvenes. Los padres fueron principalmente mujeres (70.9%) y de raza blanca (60.8%). Se les pidió a los padres la participación de su hijo mayor entre las edades de 10 y 19 años (M = 13.74 años, DE = 2.57; 52.9% varones). Los participantes completaron las medidas sobre exposición a desastres, estrés postraumático, depresión, y ansiedad. El LCA reveló cuatro patrones de exposición en ambos padres y jóvenes: alta exposición (15.5% padres, 9.5% niños), exposición moderada (19.8% padres, 28.2% niños), exposición comunitaria (45.9% padres, 34.4% niños), y baja exposición (18.8% padres, 27.8% niños). En términos de la SM, hubo similitudes a lo largo de los enfoques analíticos, pero el LCA destacó un efecto umbral, con la clase de alta exposición presentando características peores que todas las otras, d = 1.12. Estos resultados tienen implicaciones importantes para entender las diferentes experiencias de exposición de los sobrevivientes y su vínculo con resultados de la SM. Los hallazgos son también informativos en el desarrollo y el uso de herramientas de tamizaje usadas en los contextos post-desastres en determinar quién podría o no necesitar servicios de SM.

A Meta-Analysis of the Impact of Natural Disasters on Internalizing and Externalizing Problems in Youth.

Although exposure to natural disasters can lead to diverse mental health (MH) outcomes in youth, most child disaster MH research has focused on posttraumatic stress symptoms (PTSS). To highlight the likelihood of other MH outcomes, we meta-analyzed studies that have examined other (non-PTSS) internalizing and externalizing behavior problems in youth exposed to natural disasters. We used PRISMA guidelines to systematically gather studies that have examined the association between natural disaster exposure and non-PTSS internalizing and/or externalizing problems in samples of children and adolescents. Analyses of random effects models of 62 studies examining non-PTSS internalizing problems and 26 studies examining externalizing problems showed exposure to natural disasters was significantly associated with non-PTSS internalizing, rmean = .18, k = 70, and externalizing problems, rmean = .08; k = 31, in youth. Moderator analyses revealed a stronger association between disaster exposure and non-PTSS internalizing problems in countries with a "medium" Human Development Index (HDI) ranking, r = .56, than in countries with "high," r = .15, and "very high," r = .16, HDI rankings. We also found a stronger association between disaster exposure and externalizing problems in countries with a medium HDI ranking, r = .54, versus high, r = .05, and very high, r = .04, HDI rankings, and based on parent, r = .16, compared to child, r = -.01, report. Results support the need for assessment of multiple postdisaster MH outcomes to inform comprehensive interventions. We also include a discussion of the state of the disaster MH research.

Protective Factors, Coping Appraisals, and Social Barriers Predict Mental Health Following Community Violence: A Prospective Test of Social Cognitive Theory.

This study tested social cognitive theory of posttraumatic adaptation in the context of mass violence, hypothesizing that pre-event protective factors (general self-efficacy and perceived social support) would reduce posttraumatic stress symptoms (PTSS) and depression severity through boosting post-event coping self-efficacy appraisals (mediator). We qualified hypotheses by predicting that post-event social support barriers would disrupt (moderate) the health-promoting indirect effects of pre-event protective factors. With a prospective longitudinal sample, we employed path models with bootstrapping resampling to test hypotheses. Participants included 70 university students (71.4% female; 40.0% White; 34.3% Asian; 14.3% Hispanic) enrolled during a mass violence event who completed surveys one year pre-event and 5-6 months post-event. Results revealed significant large effects in predicting coping self-efficacy (mastery model, R2 = .34; enabling model, R2 = .36), PTSS (mastery model, R2 = .35; enabling model, R2 = .41), and depression severity (mastery model, R2 = .43; enabling model, R2 = .46). Overall findings supported study hypotheses, showing that at low levels of post-event social support barriers, pre-event protective factors reduced distress severity through boosting coping self-efficacy. However, as post-event social support barriers increased, the indirect, distress-reducing effects of pre-event protective factors were reduced to nonsignificance. Study implications focus on preventative and responsive intervention.

Dating and Sexual Violence Research in the Schools: Balancing Protection of Confidentiality with Supporting the Welfare of Survivors.

Rigorous research and program evaluation are needed to understand the experience of dating and sexual violence among youth and the impact of prevention and intervention efforts. Our dilemma in doing this work occurred when youth disclosed dating and sexual violence on a research survey. What responsibility do researchers have to protect survivors' confidentiality as a research participant versus taking steps to ensure the student has the opportunity to access help? In our evaluation of a pilot dating violence prevention program, our protocols employed widely used procedures for providing resources to participants upon their completion of the survey and de-identifying survey data. Upon reviewing preliminary survey results, we became concerned that these established procedures were not sufficient to support research participants who were adolescent survivors of dating and sexual violence. We followed a structured ethical decision-making process to examine legal and ethical considerations, consult with colleagues, consider impacts and alternative solutions, and ultimately find a solution. Through this process, we developed procedures that balance participant confidentiality and the desire to support the welfare of survivors, which other researchers may want to employ when conducting youth sexual and dating violence research in school and community settings.

Parent-Child Relationship Quality and Gender as Moderators of the Influence of Hurricane Exposure on Physical Health Among Children and Youth.

OBJECTIVE: To investigate the long-term influence of disaster exposure, parent-child relationship quality (PCRQ), and gender on child and youth physical health. METHODS: Parent-child dyads (N = 1,886) were randomly selected and interviewed approximately 18 months after Hurricane Georges hit Puerto Rico (1998), and reinterviewed 12 months later. The outcome variables were parent report of a global rating of children's physical health, and frequency of medical problems and medical visits in the past year. RESULTS: Conservative analyses that accounted for a host of postdisaster health-relevant factors showed that hurricane exposure exerted detrimental influence on physical health at both 18 and 30 months after the event. The moderating role of PCRQ in the relation between hurricane exposure and physical health varied by gender. CONCLUSION: Disasters have long-term potential to influence the physical health of children and adolescents. PCRQ serves as resource but its role in the context of disasters is complex.

The mutual influence of parent-child maladaptive emotion regulation on posttraumatic stress following flood exposure.

Decades of disaster research support the influence parents have on their children's adaptation. Recently, research has shifted to focus on disasters as a whole family experience. Using the actor-partner interdependence model, this study examines maladaptive cognitive emotion regulation strategies in parents and children and how these strategies influence their own and one another's posttraumatic stress symptoms (PTSS). The present study includes 485 parent-child dyads who experienced the 2015-2016 Texas floods. The majority of parents identified as mothers (66.3%), with a male child (52.8%) whose average age was 13.75 years. Mplus was used to identify the models and evaluate differences between each cognitive emotion regulation strategy across parent-child dyads in the high disaster exposure group compared to all other levels of exposure (other-exposure). Odds ratios examined differences not captured by the actor-partner interdependence model. Support for interdependence was found for the other-exposure group, suggesting parents and children mutually influence each other's PTSS by their own cognitive emotion regulation. No interdependence was found in the high-exposure group. However, high-exposure child actor effects were found for self-blame and other-blame, and child partner effects were only found for self-blame. Parent actor effects were only significant for catastrophizing and parent partner effects for catastrophizing and rumination. Odds ratios for the high-exposure group found that only child self-blame influenced parent PTSS, and only parent rumination and catastrophizing influenced child PTSS. Implications for supporting families after disasters are discussed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Identifying what educators need to support trauma-informed practices in the schools: A community needs assessment.

Educators are often on the frontline of supporting the well-being of their students. Thus, it is critical to ask teachers what they need in regard to implementing trauma-informed practices in schools (TIPS). This mixed-methods, community-initiated needs assessment explored educators' well-being and use of trauma-informed resources. A random selection of 450 certificated school staff from two school districts was invited to participate. Educators (n = 178; 39.5% response rate) completed a survey, and four focus groups were conducted (n = 14) to obtain feedback on factors affecting the use of TIPS. Descriptive statistics and logistic regression analyses were used to determine the factors most related to resource use. Teachers reported strong well-being and low levels of secondary traumatic stress, but high levels of burnout. Themes from the focus groups highlight administrator actions that can improve teacher well-being. Teachers rated their most used resources as a list of mental health resources, virtual-guided wellness activities, and opportunities to connect with others, whereas the most helpful were opportunities to connect with others, in-person-guided wellness activities, and training to identify students who may need support. Teacher well-being and school climate achieved traditional significance values for predicting teacher use of resources; however, they did not reach the Bonferroni-adjusted significance value. Results from this needs assessment indicate that teachers wanted resources to adequately respond to their own and their students' mental well-being. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Ethanol, acetaldehyde, and methanol in the gas phase and rainwater in different biomes and urban regions of Brazil.

In the context of the increasing global use of ethanol biofuel, this work investigates the concentrations of ethanol, methanol, and acetaldehyde, in both the gaseous phase and rainwater, across six diverse urban regions and biomes in Brazil, a country where ethanol accounts for nearly half the light-duty vehicular fuel consumption. Atmospheric ethanol median concentrations in São Paulo (SP) (12.3 ± 12.1 ppbv) and Ribeirão Preto (RP) (12.1 ± 10.9 ppbv) were remarkably close, despite the SP vehicular fleet being ∼13 times larger. Likewise, the rainwater VWM ethanol concentration in SP (4.64 ± 0.38 µmol L-1) was only 26 % higher than in RP (3.42 ± 0.13 µmol L-1). This work demonstrated the importance of evaporative emissions, together with biomass burning, as sources of the compounds studied. The importance of biogenic emissions of methanol during forest flooding was identified in campaigns in the Amazon and Atlantic forests. Marine air masses arriving at a coastal site led to the lowest concentrations of ethanol measured in this work. Besides vehicular and biomass burning emissions, secondary formation of acetaldehyde by photochemical reactions may be relevant in urban and non-urban regions. The combined deposition flux of ethanol and methanol was 6.2 kg ha-1 year-1, avoiding oxidation to the corresponding and more toxic aldehydes. Considering the species determined here, the ozone formation potential (OFP) in RP was around two-fold higher than in SP, further evidencing the importance of emissions from regional distilleries and biomass burning, in addition to vehicles. At the forest and coastal sites, the OFP was approximately 5 times lower than at the urban sites. Our work evidenced that transition from gasoline to ethanol or ethanol blends brings the associated risk of increasing the concentrations of highly toxic aldehydes and ozone, potentially impacting the atmosphere and threatening air quality and human health in urban areas.

Understanding the psychosocial impact of the COVID-19 pandemic on Latinx emerging adults.

There is growing evidence about the potential negative psychosocial impact of the COVID-19 pandemic on ethnoracially minoritized young adults. Emerging adulthood is a developmental stage (ages 18-29 years old) that is characterized by identity exploration, instability, self-focus, feeling "in between" and having a sense of possibilities. Latinx emerging adults have reported significant socio-emotional consequences as a result of the COVID-19 pandemic. The aim of this study was to explore the psychosocial impact of the COVID-19 pandemic on Latinx emerging adults (N = 31; ages 18-29) in California and Florida through online focus group interviews. A qualitative constructivist grounded theory approach was used in an effort to develop empirical knowledge, as research on the psychosocial impact of the COVID-19 pandemic on Latinx young adults is limited. This method served to capture the richness of the experiences of participants by allowing analytic codes and categories to drive theory development. In total, seven focus groups were held and participants attended a virtual focus group with other Latinx emerging adults from their state. The focus groups were transcribed verbatim and coded using constructivist grounded theory. Five themes were identified from the data concerning the impact of the pandemic on Latinx emerging adults, which centered around mental health experiences, navigating family factors, pandemic-related communication, career and academic disruptions, and systemic and environmental factors. A theoretical model was constructed to generate an understanding about factors influencing psychosocial functioning for Latinx emerging adults during the pandemic. The study has implications for advancing science on the consequences of pandemics on mental health and cultural considerations that may influence disaster recovery. Examples of these cultural considerations that emerged from this study include multigenerational values, heightened responsibilities, and mediating pandemic information. Results can inform efforts to increase support and resources for Latinx emerging adults in order to address the psychological difficulties resulting from the COVID-19 pandemic.

Life stressors and posttraumatic stress symptoms mediate the association between disaster exposure and identity-related distress in emerging adults.

Objective: The current multi-university, multi-disaster study examined the impact of natural disaster exposure on identity-related distress through life stressors and posttraumatic stress symptoms (PTSS). Participants: Young adult university students (n = 665, 77% female, M = 20.5 years old) participated in Wave (W) 1. Half provided contact information for follow-up, and 136 university students participated in W2. Method: University students in the mainland U.S. and Puerto Rico were asked about disaster exposure, life stressors, PTSS, and identity-related distress at W1 (M = 9.7 months post-disaster) and identity-related distress at W2 (M = 12.4 months after W1). Two serial mediation models assessed the indirect effect of disaster exposure on W1 and W2 identity-related distress through life stressors and PTSS. Results: Disaster exposure impacted identity-related distress concurrently and longitudinally through increasing life stressors since disaster and PTSS. Conclusion: Potential supportive services should address identity-related distress among disaster-exposed young adults with PTSS.

Social-cognitive mediators of the relationship of media exposure to acute mass violence and distress among adolescents.

OBJECTIVE: Traditional and social media coverage of acute mass violence (AMV; e.g., terrorism, mass shootings) create an environment where the possibility of being the victim of AMV is constantly portrayed and this media exposure has been linked to distress among people not directly affected. We explored how initial emotional reactions to media exposure to AMV, threat perception, and core beliefs may mediate the media exposure to current anxiety or depression symptoms relationship. METHOD: Adolescents (N = 342) in the United States aged 13-17 years old (M = 15.43, SD = 1.29; 71.6% female) completed online surveys asking about time spent watching AMV coverage in the media, initial emotional reactions to the media coverage, threat perception, core beliefs, and current anxiety and depression symptoms. Mediation was tested with PROCESS (Hayes, 2018) for anxiety and depression. Sex and having lived in a community exposed to an AMV event were control variables. RESULTS: Bootstrap confidence intervals (95%) for the unstandardized indirect effects of core beliefs, initial anxious emotional reactions, and personal threat perception based on 5,000 bootstrap samples did not include zero, providing support for mediation. Core beliefs and initial anxious emotional reactions were mediators between time-consuming AMV-related media and current anxiety symptoms. Personal threat perception and initial anxious emotional reactions mediated the relationship between time-consuming AMV-related media and current depression symptoms. CONCLUSION: The impact of media exposure to AMV on depression and anxiety can be understood through its influence on initial anxious reactions, core beliefs, and threat perception. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Getting precise and pragmatic about the assessment of bullying: the development of the California Bullying Victimization Scale.

Accurate assessment of bullying is essential to intervention planning and evaluation. Limitations to many currently available self-report measures of bullying victimization include a lack of psychometric information, use of the emotionally laden term "bullying" in definition-first approaches to self-report surveys, and not assessing all components of the definition of bullying (chronicity, intentionality, and imbalance of power) in behavioral-based self-report methods. To address these limitations, we developed the California Bullying Victimization Scale (CBVS), which is a self-report scale that measures the three-part definition of bullying without the use of the term bully. We examined test-retest reliability and the concurrent and predictive validity of the CBVS across students in Grades 5-12 in four central California schools. Concurrent validity was assessed by comparing the CBVS with a common, definition-based bullying victimization measure. Predictive validity was examined through the co-administration of measures of psychological well-being. Analysis by grade and gender are included. Results support the test-retest reliability of the CBVS over a 2-week period. The CBVS was significantly, positively correlated with another bullying assessment and was related in expected directions to measures of well-being. Implications for differentiating peer victimization and bullying victimization via self-report measures are discussed.

Psychosocial influences on posttraumatic growth among university students following a mass murder.

To understand the range of psychosocial outcomes associated with a mass violence incident (MVI), there is a need to study posttraumatic growth (PTG). PTG is the experience of positive change that can result from contending with highly challenging life crises (Tedeschi & Calhoun, 1996). Studies have documented how characteristics of the individual, their trauma exposure, and how they cope or process the event can influence PTG. However, to our knowledge, none have addressed how the activities in which an individual may engage in following the trauma can influence PTG. Following a mass murder that impacted a university community, this study examined how pretragedy factors, objective exposure, psychosocial factors (e.g., core beliefs, posttraumatic stress symptoms, social support), and the posttragedy activities in which participants engaged may influence PTG. The posttragedy activities assessed were Mental Health Services, Informational Support, Grieving and Remembrance, Taking Action, and Coping Activities. Participants (N = 116; 68.1% female; 40% White, 31.3% Asian/Pacific Islander, 14.8% biracial, and 13.9% Latinx) who were enrolled in a college adjustment study the year prior to the tragedy were recontacted and asked to complete an online survey approximately 5-6 months following the MVI. Hierarchical regression results revealed that core beliefs and the posttragedy activity category of Taking Action were associated with PTG. Findings contribute to our understanding of the influences on PTG for university students impacted by a MVI and highlight the need to further examine the role of posttragedy activities, such as Taking Action on posttragedy adjustment. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Factors affecting mental health service use among university students following an episode of mass violence.

OBJECTIVE: Episodes of mass violence can increase mental health (MH) symptoms among survivors, possibly leading to increased MH service use. Within the context of an episode of mass violence that impacted a university community, we prospectively explore the predisposing (demographics, clinical levels of MH symptoms, victimization history, objective exposure, and social support), enabling (MH stigma, prior MH service use,), and need (MH symptoms, current social support) variables that influence posttragedy MH service use. METHOD: In the original study, 593 students completed surveys at 2 time points during their first year of college. After the tragedy, students were invited to participate in a post event survey for a final sample of n = 142. RESULTS: A total of 14.3% of our sample accessed MH services post event. Results indicate that demographic factors were not related to MH service use. When examined jointly in a logistic regression, the final model suggests that prior MH service use and greater objective exposure were related to posttragedy MH service use. Other predisposing, enabling, and need factors were not associated with MH service use. CONCLUSION: Prior experience with MH services may help survivors engage in services following a disaster. As disaster MH service models tend to target outreach to those with the greatest exposure, this may be why those survivors had greater MH service use. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Social and Contextual Influences on Mental Health Following an Episode of Mass Violence.

Few studies explore how the recovery context following an episode of mass violence affects posttragedy mental health (MH), despite clear implications for developing posttrauma supports. Following a mass murder, this prospective, longitudinal study examined how reactions to media coverage, family reactions, and disappointment in social support influenced posttragedy MH (posttraumatic stress, depression, anxiety), above and beyond the influence of pretragedy MH, pretragedy victimization, and objective exposure. University students who participated in a study of college adjustment prior to the mass murder (n = 593) were recontacted and provided information on their posttragedy life (n = 142). Students (n = 84) also responded to open-ended questions about what was the most stressful part of the tragedy and psychological effects of the mass murder. After accounting for pretragedy victimization and MH, and objective exposure to events, hierarchical regression analyses indicated that distress related to media coverage and stronger family reactions contributed to higher levels of posttraumatic stress symptoms and anxiety, but not depression. Disappointment with social support was not significantly related to posttragedy MH. Common themes in student comments include grief, feeling vulnerable/unsafe, concern for the impact on others, stress related to media coverage, proximity to the events, changes in psychosocial adjustment, and returning to daily life. Results suggest that negative reactions to media coverage and family reactions that are overprotective or distressing negatively affect survivors' MH, beyond their objective exposure to the violence, pretragedy MH, and pretragedy victimization.

Quantification and risk assessment of pesticides in southern Brazilian air samples using low-volume sampling and rapid ultrasound-assisted extraction.

Brazil is one of the largest pesticide consumers in the world. In the last few years, the use of permissive environmental laws and newly authorized pesticide formulations has been enlarged. Thus, the intensive and inadequate use of pesticides may present a risk to human health since these compounds may move between environmental compartments. Outdoor air samples were collected using low-volume samplers at Arapongas city in the state of Paraná, Brazil, between February and November of 2017. Polyurethane foam (PUF) cartridges were presented as a good choice to collect pesticides from atmospheric gas phase samples when compared to styrene-divinylbenzene (XAD-2). Lower limits of quantitation were obtained with PUF cartridges, which allowed a greater number of samples to be quantified in PUF than in XAD-2. Atrazine and trifluralin were quantified for the first time in Brazilian air samples. The levels of concentration ranged between 192-1731 pg m-3 (chlorpyrifos), 136-1345 pg m-3 (atrazine) and 184-1189 pg m-3 (trifluralin). Alachlor has been out of market in Brazil since 2013, and thus it was not detected in any gas phase sample. The highest daily inhalation exposure was observed in infants, 1 × 10-6 mg kg-1 d-1 for atrazine, chlorpyrifos and trifluralin. None of the analyzed pesticides were associated with a hazardous quotient (HQ) > 1, considering the worst-case scenario for infants, indicating that there is no risk associated with the exposed population. Cancer risk assessment for trifluralin resulted in values below 1 × 10-6, therefore not indicating any significant risk to human health.

Non-linear Dynamic Shifts in Distress After Wildfires: Further Tests of the Self-Regulation Shift Theory.

Worldwide exposure to explosive wildfires has become increasingly common. The psychological impact of these fires is substantial, demanding a deeper understanding of post-wildfire adaptation. This paper consists of two studies aiming to test self-regulation shift theory and its predicted non-linear shifts in distress using cusp catastrophe analyses. Study 1 tested a cusp catastrophe model on distress after the Waldo Canyon wildfire, Colorado (June, 2012). Results of study 1 showed that coping self-efficacy early after the wildfire was a significant bifurcation factor affecting when a shift in distress levels occurred from a lower state to an upper state. Perceived loss was a significant asymmetry controlling factor affecting the relative strength of each state. These findings indicate that a non-linear shift is more likely to occur at lower levels of coping self-efficacy and higher perceived loss. Study 2 tested the same model among survivors of several wildfires in California during 2017 and 2018. Results of study 2 confirmed the importance of coping self-efficacy again as a significant bifurcation factor. In this case, peritraumatic dissociation was found to be a significant asymmetry controlling factor instead of loss. These results indicate that an upward shift in distress occurs when coping self-efficacy is lower and peritraumatic dissociation is higher. Collectively, the combined findings suggest that coping self-efficacy is a pivotal variable consistent with self-regulation shift theory predictions. Intervention implications are discussed.

Measuring media exposure to acute mass violence.

OBJECTIVE: Researchers have studied the influence of media exposure to acute mass violence (e.g., terror attack, mass shooting, etc.) on distress in populations not directly experiencing the trauma; however, the field has yet to achieve consensus on the measurement of media exposure. There has been a rapidly changing media environment since this body of research began, with the rise of social media. To address this, we developed a measure using the most relevant items from media exposure surveys and accounting for evolving social media. METHOD: We asked a sample of youth and adults (N = 1,249), ages 14 - 59 years old, about average time spent consuming news in general, time spent viewing coverage of specific terror attacks, and their emotional reactions to the media coverage. RESULTS: A confirmatory factor analysis specifying a 3-factor model was run on a subsample of the data (n = 308), and the data fit the model well, χ2(17) = 30.799, p < .05, root mean square error of approximation = .051 [90% confidence interval = .020, .080], comparative fit index = .989, and standardized root mean square error of approximation = .043. Measurement invariance was examined on the remainder of the participants (n = 937) to determine whether the model was invariant across participant sex. CONCLUSION: Analyses support that the factor structure of the measure was consistent across male and female participants. Implications on measuring media exposure to acute mass violence will be discussed. (PsycInfo Database Record (c) 2020 APA, all rights reserved).