Culturally Grounded Stress Reduction and Suicide Prevention for African American Adolescents

Suicide Prevention Takes a Nation: Collaborative Approaches to Universalize Suicide Prevention

Suicide is a complex public health issue impacting many children and adolescents-and their families-each year, and it requires a complex public health solution. Local, state, and national collaboratives that leverage evidence-based strategies, foster community engagement, and prioritize equity are necessary to holistically address this issue. Here, the authors discuss the necessary steps for fostering inclusive community partnerships and outline the rationale for partnering with schools, youth groups, faith organizations, parent-teacher organizations, clinical settings, and professional organizations, as well as collaborating with the juvenile justice and child welfare systems and working together to foster suicide prevention policy.

Reducing suicidal ideation in African American adolescents: A randomized controlled clinical trial

OBJECTIVE

Suicide rates among African American adolescents have increased exponentially in recent years. The socioecological stressors that can increase suicide risk for African American adolescents, in conjunction with unique suicide risk manifestations within this group, require culturally sensitive preventive interventions. This study examines the efficacy of the Adapted-Coping With Stress course (A-CWS), a culturally tailored preventive intervention, to reduce suicidal ideation in African American adolescents, utilizing a randomized controlled design.

METHOD

Participants included 410 ninth-grade students in a large Midwestern city; most students identified as Black/African American. Participants were randomly assigned to either the A-CWS intervention or standard care control condition. All participants were assessed at baseline, immediately postintervention, and 6 and 12 months postintervention.

RESULTS

Treatment effects were examined using latent growth models comparing suicidal ideation trajectories in control and intervention conditions. Analyses were conducted using both intention-to-treat and treatment-as-received samples (i.e., intervention condition participants who attended at least 80% of sessions). In both intention-to-treat and treatment-as-received analyses, there was a significant treatment effect: Individuals in the A-CWS intervention condition with higher baseline ideation evidenced a superior reduction in suicidal ideation over the course of the study, relative to their counterparts in the standard care control condition.

CONCLUSION

Findings indicate that the A-CWS preventive intervention is efficacious in reducing suicidal ideation among African American adolescents with higher levels of baseline suicidal ideation and that effects sustain over time, with the strongest effect evidenced 12 months postintervention. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Quantifying the Representation of Black Adolescents in Suicide Intervention Research

This systematic review aimed to quantify the representation of Black youth in U.S. suicide intervention research. Specifically, we sought to evaluate Black youth representation in terms of (a) equity of inclusion (i.e., the inclusion of Black youth in research study samples at a rate consistent with the overall national rate of Black adolescents in the US) and (b) equity of intervention efficacy (i.e., evaluating the presence of racial disparities in intervention efficacy/effect sizes). In addition, we aimed to evaluate whether an association existed between funding status of research and representation of Black youth in studies, and to provide recommendations for future research in this area. To this end, the present study extracted and analyzed demographic information of studies included in recent meta-analyses conducted by Robinson and colleagues (2018), which were not previously analyzed, in addition to new literature published between September 2017 and January 2021. Results showed that the prevalence of Black youth included in studies was representative (14.67%; ntotal = 4451, nBlack = 664), with a median inclusion rate of 13%; however, absolute sample and group sizes were so small that it precluded comparison of differential treatment outcomes for Black youth. Thus, out of 22 studies identified, only one was able to investigate treatment outcomes for suicide in Black youth specifically. This study points to the conclusion that without adequately powered studies, disparities in treatment efficacy for Black youth cannot be compared or addressed, and the existing disparity in suicidal outcomes for Black youth will grow even larger.

Exploring Service Use Disparities among Suicidal Black Youth in a Suicide Prevention Care Coordination Intervention

OBJECTIVE

The aim of this study is to examine service utilization disparities among Black youth participating in Linking Individuals Needing Care (LINC), a 90-day research-informed suicide care coordination intervention.

METHODS

An open trial pilot was conducted to examine the effectiveness of LINC in increasing access to and engagement in mental health and non-mental health services among suicidal youth (N = 587). Other variables of interest included service use facilitators and service use barriers. Generalized linear mixed models with binomial distribution and logit link were performed to ascertain if service use facilitators and barriers were associated with service utilization and if disparities in service use and engagement existed between Black and White suicidal youth through a comparative analysis.

RESULTS

Service utilization differences were found between Black and White youth. While Black and White youth were both likely to engage in individual therapy (OR = 1.398, p < .001) and non-mental health services (OR = 1.289, p < .001), utilization rates for mental health and medication management services were lower for Black (55.1% to 60.6%) youth compared to White (66.0% to 71.0%) youth. Specifically, Black youth were significantly less likely than Whites to receive medication management (OR = .466, p = .002). Systemic barriers such long waitlists for care (OR = 1.860, p = .039) and poor relationship with providers (OR = 7.680, p = .028) increased odds of engagement in non-mental health services. Clinical disorders and engagement in suicide-related behaviors increased the likelihood of obtaining care from both medication management and non-mental health services.

CONCLUSION

Care coordination services for suicidal youth can increase access and engagement in mental health and non-mental health services. Culturally adapted models attending to cultural and social assets of Black families are needed to reduce disparities and suicide risk among Black youth.

Associations Between Family Factors, Social Integration, and Suicidal Ideation Across the Life Course of an Urban African American Cohort

Suicide is a problem on the rise but not studied extensively among African Americans. It is critical to identify risk factors for suicidal ideation to reduce risk. This study examines whether family and social factors over the life course predict suicidal ideation among African American adults in midlife. We conducted multiple logistic regression analyses on data from a longitudinal cohort of African Americans first assessed in childhood to identify associations with suicidal ideation in midlife (ages 33-42). Findings suggested living without one's mother in childhood (vs. living with mother alone; aOR = 3.69, p = .017) and parental rule-setting in adolescence (aOR = 0.79, p = .047) were associated with suicidal ideation. Having a lifetime drug disorder (aOR = 2.19, p = .046) or major depression by young adulthood (aOR = 3.58, p < .001) was also associated with an increased risk of suicidal ideation. Findings highlight the importance of intervention for children in mother-absent homes for improving mental health outcomes. Family interventions that promote parental rule-setting and addressing drug problems and depressive symptoms early in the life course offer an area for intervention to reduce suicide over the long term.

Social Support Coping for African American Adolescents: Effect of a Culturally Grounded Randomized Controlled Trial Intervention

The effect of the Adapted-Coping with Stress (A-CWS) intervention on social support coping was examined, using a randomized controlled trial design. The participants were 410 ninth-grade students (ages 14 to 16 years and mostly African American) living in low-resourced neighborhoods. Participants were randomly assigned 1:1 to either the A-CWS intervention or a standard care control condition. All participants were assessed at their schools before implementation of the intervention, at intervention completion, and again at 6- and 12-month post-intervention. Engagement in social support coping was examined in both intention-to-treat and treatment-as-received samples (i.e., intervention participants who attended at least 12 A-CWS treatment sessions and participants in the standard care control condition), using latent growth models. In intention-to-treat analyses, no significant treatment effects were identified. In treatment-as-received analyses, results revealed a significant association between social support coping and treatment condition; levels of social support coping decreased over time in the control condition, but they remained relatively stable in the treatment condition. The results indicate adequate intervention adherence and efficacy of the A-CWS to sustain social support coping within a sample of youth at high risk for stress exposure and associated disorders.Clinical Trial Registration: clinicaltrials.gov identifier: NCT0395445.

A Systematic Review of School-Based Suicide Prevention Interventions for Adolescents, and Intervention and Contextual Factors in Prevention

Suicide is the fourth leading cause of death among adolescents, globally. Though post-primary, school-based suicide prevention (PSSP) has the potential to be a key strategy for preventing adolescent suicidal thoughts and behaviours (STBs), there are persisting challenges to translating PSSP research to practice. Intervention and contextual factors relevant to PSSP are likely key to both PSSP effectiveness and implementation. As such, this systematic review aimed to summarise the effectiveness of PSSP for adolescent STBs and highlight important intervention and contextual factors with respect to PSSP. PsycINFO, Medline, Education Source, ERIC, Web of Science, and the Cochrane Central Register of Controlled Trials were searched to identify randomised and non-randomised studies evaluating the effectiveness of interventions located in post-primary, school-based settings targeting adolescent STBs. PSSP effectiveness and intervention and contextual factors were synthesised narratively. Twenty-eight studies were retained, containing nearly 47,000 participants. Twelve out of twenty-nine trials comparing intervention and independent control comparators reported statistically significant reductions in STBs postintervention, and 5/7 trials comparing preintervention and postintervention scores demonstrated significant reductions in STBs over time. Reporting and analysis of intervention and contextual factors were lacking across studies, but PSSP effectiveness and intervention acceptability varied across type of school. Although school personnel commonly delivered PSSP interventions, their input and perspectives on PSSP interventions were lacking. Notably, adolescents had little involvement in designing, inputting on, delivering and sharing their perspectives on PSSP interventions. Twenty out of twenty-eight studies were rated as moderate/high risk of bias, with non-randomised trials demonstrating greater risks of bias and trial effectiveness, in comparison to cluster randomised trials. Future research should prioritise complete reporting and analysis of intervention and contextual factors with respect to PSSP, involving key stakeholders (including adolescents and school personnel) in PSSP, and investigating key stakeholders' perspectives on PSSP. Given the inverse associations between both study quality and study design with PSSP effectiveness, particular consideration to study quality and design in PSSP research is needed. Future practice should consider PSSP interventions with universal components and PSSP which supports and involves key stakeholders in engaging with PSSP.

Exploring adolescents' perspectives on and experiences with post-primary school-based suicide prevention: a meta-ethnography protocol

BACKGROUND

Globally, suicide is the fourth leading cause of adolescent mortality. Although post-primary school-based suicide prevention (PSSP) interventions are an evidence-based strategy for targeting adolescent suicidal thoughts and behaviors (STBs), PSSP effectiveness does not easily translate to school settings. Adolescents' perspectives on PSSP are particularly important for (1) intervention effectiveness and implementation in both research and practice, (2) addressing PSSP evidence-practice gaps, and (3) enhancing meaningful adolescent involvement in PSSP, yet there is a gap in understanding adolescents' experiences of engaging with PSSP. As such, this protocol outlines a meta-ethnography which will explore and synthesize adolescents' perspectives on engaging with PSSP interventions, as participants/end-users, intervention advisors, facilitators, and co-designers and co-researchers.

METHODS

The meta-ethnography protocol follows the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) guidelines. The protocol was guided by the seven-stage process for meta-ethnography proposed by Noblit and Hare. Searches of PsycINFO, MEDLINE, Web of Science, CINAHL, ERIC, Scopus, and study reference lists will identify peer-reviewed studies. Gray literature will be identified by searches in ProQuest, British Library EThOS, and DART-Europe E-theses Portal. The main reviewer will initially assess the eligibility of studies based on title and abstract, with full texts reviewed by at least two reviewers. Findings of the included studies will be synthesized in line with Noblit and Hare's stages and evaluated using the Critical Appraisal Skills Program (CASP) checklist.

DISCUSSION

To our knowledge, this is the first proposed meta-ethnography to explore and integrate the findings of qualitative studies exploring adolescents' perspectives on engaging with PSSP interventions. Understanding adolescents' experiences of engaging with PSSP will impact the field of PSSP in several ways by (1) enhancing research processes and intervention effectiveness and implementation, (2) informing decision-making and policymaking relevant to practice, (3) guiding meaningful adolescent involvement in PSSP, and (4) contributing to knowledge on the safety implications of engaging adolescents in PSSP. Finally, it is expected that the insights from this meta-ethnography will be widely applicable, given the growing demand for meaningful youth involvement in health-related fields.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42022319424.

Adaptation of the Coping With Stress Course for Black Adolescents in Low-Income Communities: Examples of Surface Structure and Deep Structure Cultural Adaptations

Black adolescents in low-income communities are at increased risk of developing mental health problems due to the impact of cumulative poverty-related stressors and racial discrimination, yet Black youth have relatively low rates of mental health service utilization, resulting in significant unmet need. The Coping With Stress (CWS) Course is an evidence-based, cognitive behavioral intervention that has been shown to reduce the incidence of anxiety, mood, and conduct problems among predominantly White samples, as well as Asian and Latinx youth. In the past 25 years since the CWS Course was introduced, Black adolescents have either been severely underrepresented or conspicuously absent from program evaluation research on the CWS Course, with few exceptions. The purpose of this article is threefold: (1) to justify the need for cultural adaptations to the CWS Course for Black adolescents from low-income communities, (2) to describe the scientific basis for the specific surface structure and deep structure modifications made to the culturally adapted version of the CWS Course, known as Resilient In spite of Stressful Events or RISE, and (3) to illustrate the deep structure adaptations with a vignette drawn from implementation of the RISE program with Black adolescents in a low-income, urban community.

Understanding suicide risk for youth who are both Black and Native American: The role of intersectionality and multiple marginalization

INTRODUCTION

Native American and multiracial youth experience elevated risk for suicide ideation (SI) and suicide attempts (SA); however, intersectional identities are often unexamined in suicide research.

METHOD

We examined the prevalence of SI and SA, and the impact of intersectional identities (sex, sexual minority identity, and economic insecurity) on these rates, in 496 biracial Black-Native American, 2,804 Native American, 14,220 Black, 5,569 biracial Native American-White, 4,076 biracial Black-White, and 118,816 White youth who participated in the Minnesota Student Survey.

RESULTS

Black-Native American youth reports of SI and SA resembled other Native American youth and were significantly higher than those reported by Black, White, and Black-White (SA only) youth. While sexual minority youth reported higher rates of SI and SA than heterosexual youth, this difference between sexual minority and heterosexual Black-Native American youth was smaller as compared to their peers.

CONCLUSION

Though they largely resemble their mono/biracial Native American peers, Black-Native American youth show some distinct patterns of SA when accounting for their intersectional identities. Despite presumed similarities in systemic risk factors, Black and Black-Native American youth differ considerably in reported suicidality. The experiences of Black-Native American teens warrant further examination.

Protective factors for suicidal ideation among Black adolescents indirectly exposed to community violence

OBJECTIVE

Community violence exposure has been identified as a risk factor for Black youth suicide ideation. However, little is known about factors that protect community violence exposed youth against suicide ideation. The current study examined associations between knowledge of family member and peers' community violence exposure and Black youth's subsequent suicidal ideation, and investigated self-worth and social support as protective factors.

METHOD

Participants were a community sample of Black youth (N = 447, 47.4% female; Mage = 11.77, SD = 0.35) who reported about community violence exposure, self-worth, social support, and suicide ideation in grades 6 and 7.

RESULTS

Regression analyses revealed that grade 6 knowledge of family member and peers' community violence exposure was associated with increases in suicide ideation assessed in grade 7. Self-worth attenuated the association between knowledge of others' community violence exposure and suicide ideation for male adolescents. For female adolescents, social support attenuated the association between knowledge of others' community violence and suicide ideation.

CONCLUSIONS

Findings highlight the consequential impact of knowledge about community violence for Black youth's suicidal ideation. Enhancing protective factors for Black youth is an important target for intervening with exposure to violence and reducing suicide ideation.

Black Youth Suicide: Investigation of Current Trends and Precipitating Circumstances

OBJECTIVE

Suicide among Black youth is a significant public health concern, yet research investigating the epidemiology of suicide in this population is limited. This study examines current trends and precipitating circumstances of suicide by sex and age group in Black youth 5 to 17 years of age, using 2 national databases.

METHOD

Data from the Web-based Injury Statistics Query and Reporting System (WISQARS) and the National Violent Death Reporting System (NVDRS) were used to investigate trends and precipitating circumstances of Black youth suicide from 2003 to 2017. We hypothesized suicide rates would increase over time for both sexes and all age groups (5-11, 12-14, and 15-17 years), and precipitating circumstances would differ by sex and age group. Trend analyses were conducted using Joinpoint regression software, version 4.8.0.01 (Surveillance Research Program, National Cancer Institute). Sex and age group comparisons of characteristics and precipitating circumstances were conducted using standard univariate statistical tests.

RESULTS

From 2003 to 2017, Black youth experienced a significant upward trend in suicide with the largest annual percentage change in the 15- to 17-year age group and among girls (4.9% and 6.6%, respectively). Mental health problems, relationship problems, interpersonal trauma and life stressors, and prior suicidal thoughts/behavior were the most common clinical characteristics and precipitating circumstances, with several varying by sex and age group.

CONCLUSION

Increases in Black youth suicide calls for the prioritization of research aimed at identifying specific risk and protective factors as well as developmental mechanisms associated with Black youth suicidal behavior. To implement effective suicide prevention programming, understanding targets for intervention is necessary.

Suicide and Suicidal Behaviors Among Minoritized Youth

Suicide rates continue to increase among children and adolescents in the United States, with suicide remaining the second leading cause of death for youth aged 10 to 24 years of age. Most studies of suicide among children and adolescents have not focused on youth of color because of research suggesting that suicide was a health threat for white youth. Research showing shifting trends in suicide for minoritized youth of color has increased national focus, revealing disparities in recognition and treatment of suicidal behaviors for racially and culturally diverse youth.

A Trauma- and Justice, Equity, Diversity, and Inclusion (JEDI)-Informed Approach to Suicide Prevention in School: Black Boys' Lives Matter

Black boys have been dying by suicide at an increasing rate. Although the reasons for this increase are unknown, suicide in Black boys is likely influenced by multiple, intersecting risk factors, including historical and ongoing trauma. Schools can serve as an important mechanism of support for Black boys; however, without intentional anti-racist frameworks that acknowledge how intersecting identities can exacerbate risk for suicide, schools can overlook opportunities for care and perpetuate a cycle of racism that compromises the mental health of Black youth. By recognizing their own implicit biases, modeling anti-racist practices, listening to and recognizing the strengths and diversity of Black youth, and fostering school-family-community partnerships, school psychologists can help transform the school environment to be a safe and culturally affirming place for Black youth. This paper outlines how school psychologists can apply a trauma- and Justice, Equity, Diversity, and Inclusion (JEDI)-informed approach to suicide prevention in order to more holistically support Black boys, disrupt patterns of aggressive disciplinary procedures, and improve school-based suicide prevention programs. By applying this lens across a multitiered systems of support (MTSS) framework, school psychologists can help to prevent the deaths of Black boys and begin to prioritize the lives of Black boys.

Suicide in African American Adolescents: Understanding Risk by Studying Resilience

Historically, suicide rates for African American adolescents have been low,relative to rates for youth of other racial-ethnic backgrounds. Since 2001, however, suicide rates among African American adolescents have escalated: Suicide is now the third leading cause of death for African American adolescents. This disturbing trend warrants focused research on suicide etiology and manifestation in African American adolescents, along with culturally sensitive and effective prevention efforts. First, we revisit leading suicide theories and their relevance for African American adolescents. Next, we discuss health promotive and protective factors within the context of African American youth development. We also critique the current status of suicide risk assessment and prevention for African American adolescents. Then, we present a heuristic model of suicide risk and resilience for African American adolescents that considers their development within a hegemonic society. Finally, we recommend future directions for African American adolescent suicidology. Expected final online publication date for the Annual Review of Clinical Psychology, Volume 18 is May 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Expanding Collective Efficacy Theory to Reduce Violence Among African American Adolescents

Community violence is a complex phenomenon, and many theories have been put forth to explain the causes of community violence and disparities in community violence across neighborhoods. One notable theory, collective efficacy theory (CET), posits that collective efficacy (i.e., a neighborhood's social cohesion and informal social control) mediates the association between concentrated disadvantage and community violence. As CET theorizes an inverse feedback loop between collective efficacy and community violence, collective efficacy could mitigate the link between neighborhood disadvantage and community violence. The current study examines the reciprocal association between collective efficacy and community violence exposure using data from 604 low-resourced, urban African American ninth-grade students from a large Midwestern city. Data were collected at 6-month intervals over 2 years. Significant cross-sectional associations were found between each of the collective efficacy constructs (social cohesion and informal social control) and community violence exposure, although no significant longitudinal cross-lagged associations were found. There were positive cross-sectional associations between (a) collective efficacy and community violence exposure and (b) informal social control and community violence exposure; however, the association between social cohesion and community violence exposure was negative. Associations between overall collective efficacy, as well as its subscales, and community violence exposure were consistent with hypothesized directions for social cohesion, but not for collective efficacy or informal social control. Findings support the use of collective efficacy as two constructs, rather than a single construct as proposed by Sampson et al. Implications for expanding original assumptions of CET are discussed.

African American adolescent suicidal ideation and behavior: The role of racism and prevention

Suicide is one of the most devastating, yet preventable, health disparities for African American adolescents. African American adolescent suicidal ideation and behavior may have different manifestations and risk factors relative to those of adolescents from other ethnic backgrounds that impact prevention efforts. For example, in addition to more common manifestations of suicidal ideation and behavior, African American youth may engage in violent or high-risk behaviors, use more lethal means, or report ideation at lower depression levels. The Adapted-Coping with Stress Course (A-CWS), an adaptation of Gregory Clarke and colleagues' Coping with Stress Course, was developed to address the cultural nuances of African American adolescents. The A-CWS is a 15-session cognitive-behavioral, group-based preventive intervention that aims to enhance adaptive coping skills and reduce suicidal ideation, by incorporating strategies that counter stressors associated with systemic racism that burden African American adolescents. This study evaluated the feasibility and acceptability of the A-CWS intervention, using a sample of predominantly African American ninth-grade students. Results indicated that the adolescents were very favorable and receptive to the A-CWS intervention and that the intervention could be conducted feasibly. The A-CWS intervention serves as a model to advance culturally-grounded, evidence-based preventive intervention, for an underserved sector of adolescents.

A Path Forward: Mental Health and the U.S. Pandemic Response

The COVID-19 pandemic presents a crisis of mental health in the United States (U.S.) alongside a crisis of infectious disease. Racial inequities in COVID-19 morbidity and mortality have brought health equity to the forefront of public health policy, exacerbating prior inequities in mental health care access and outcomes. This Commentary asserts that policymakers and advocates must prioritize mental health when responding to the pandemic. While the pandemic is an emergency of unprecedented scale, the authors argue that it also is an opportunity to implement broad-based mental health policy reforms in the U.S. that build on the successes of the Affordable Care Act and the Mental Health Parity and Addiction Equity Act. Guided by innovative state and local policies to promote population-level mental health, we outline a series of empirically grounded strategies for federal and state policymakers to promote mental health equity in the wake of COVID-19.

Mental health strategies for prevention and intervention: Community perspectives

The current issue is a call to action on the mental health crisis America is experiencing. Prevention and intervention programs are needed to address the gap in services. This current issue gathers the voices and perspectives from various populations' lived experiences with the intent to develop recommendations and solutions.

An examination of suicidality of African American adolescents at a local and national level

Suicidality is a serious concern in this country. In the U.S. nearly 40,000 people die by suicide each year. It is the 10th leading cause of death. For those 15-24, it is the 2nd leading cause of death. Using data from the Add Health Longitudinal data set and data gathered from a local organization an examination of suicidality among African American youth was conducted. Given the trauma and low resourced situations many African American adolescents find themselves in, interventions are needed to address these health concerns before other issues such as education and other life options (i.e., careers) are addressed. Questions that participants were asked related to suicidal ideation and suicide attempts; did you ever seriously consider attempting suicide and did you attempt suicide? The results showed that the local sample had higher suicidal ideation than the Add health national sample (20% vs. 13.6%), respectively. The local sample had higher percentages of suicide attempts in the past twelve months compared to the National sample. There was a statistically significant difference between females and males in the sample. Limitations and future research are found in the discussion.

What Works in Youth Suicide Prevention? A Systematic Review and Meta-Analysis

BACKGROUND

Young people require specific attention when it comes to suicide prevention, however efforts need to be based on robust evidence.

METHODS

We conducted a systematic review and meta-analysis of all studies examining the impact of interventions that were specifically designed to reduce suicide-related behavior in young people.

FINDINGS

Ninety-nine studies were identified, of which 52 were conducted in clinical settings, 31 in educational or workplace settings, and 15 in community settings. Around half were randomized controlled trials. Large scale interventions delivered in both clinical and educational settings appear to reduce self-harm and suicidal ideation post-intervention, and to a lesser extent at follow-up. In community settings, multi-faceted, place-based approaches seem to have an impact. Study quality was limited.

INTERPRETATION

Overall whilst the number and range of studies is encouraging, gaps exist. Few studies were conducted in low-middle income countries or with demographic populations known to be at increased risk. Similarly, there was a lack of studies conducted in primary care, universities and workplaces. However, we identified that specific youth suicide-prevention interventions can reduce self-harm and suicidal ideation; these types of intervention need testing in high-quality studies.