An important public concern about the impact of recreational cannabis legalization is how it may affect adolescent cannabis use. Prior research on this issue has primarily focused on the implications of "medical" cannabis legalization for adolescents and used data that cover a relatively short post-legalization period. This study extends…

Background: Research has been inconclusive as to whether stimulant treatment causes or exacerbates sleep problems in adolescents with ADHD. This study examined sleep differences in adolescents with ADHD as a function of stimulant use. Methods: Participants were adolescents with ADHD (N=159, ages 12-14). Parents reported on receipt of stimulant…

Polysubstance use is associated with myriad short- and long-term health outcomes. Although prior research has documented differences in polysubstance use between lesbian, gay, bisexual, transgender, queer/questioning, and other sexual and gender minoritized (LGBTQ +) youth and their heterosexual/cisgender counterparts, as well as between subgroups…

Adolescents who break the law have experienced situations that increase the likelihood of becoming involved in criminal activities such as drug use, gang involvement, adverse economic conditions, among others. All this, added to their stage of human development, which is characterized by physical, cognitive, social and emotional changes, can lead…

Tobacco surveillance in the United States is robust but cannot be quickly modified to capture newly identified tobacco products or behaviors. We present an example of a rapidly deployed nonprobability survey using social media recruitment that collected data on rapidly changing tobacco use behaviors. We recruited 15- to 17-year old current vapers…

The study's aim was to determine the association between school-based violence and being under the influence of drugs/alcohol during the last sexual intercourse among US high-school adolescents. A total of 3136 students from the 2019 Youth Risk Behavior survey were included. Multivariate logistic regression models were conducted to examine…

Attention-deficit/hyperactivity disorder (ADHD) is characterized by persistent patterns of inattention, hyperactivity, and impulsiveness. Among US children and adolescents aged 3-17 years, 9.4% have a diagnosis of ADHD. Previous research suggests possible links between parental substance use and ADHD among children. We conducted a systematic…

Reservation-dwelling American Indian adolescents are at exceedingly high risk for cannabis use. Prevention initiatives to delay the onset and escalation of use are needed. The risk and promotive factors approach to substance use prevention is a well-established framework for identifying the timing and targets for prevention initiatives. This study…

Background: To determine if school engagement is a viable target for early prevention of adolescent substance use, this study investigated whether school engagement in early adolescence (ages 12-14) is a cause of alcohol and cannabis use during middle to late adolescence (ages 15-19). Methods: To facilitate causal inference, inverse probability of…

Marijuana use in adolescence is associated with significant adverse outcomes. Romantic relationships are an important context for marijuana use. Prior research suggests a bi-directional relationship between marijuana use and relationship functioning; however, the complex interplay between adolescent relationship dynamics and marijuana use remains…

With the increasing prominence of the children and adolescent mental health crisis after the COVID-19 pandemic, schools have been tasked with connecting students with supports to reduce non-academic barriers to learning. Student Assistance Programs (SAPs) can assist with this by connecting students and their families with school-based and…

Little is known about the outcomes of in-school comprehensive sexuality education (CSE) programmes two or more years after programme completion, particularly in low-income countries. "Projet Jeune Leader," a youth-founded Malagasy organisation, conducted a retrospective, qualitative evaluation of a CSE programme in Madagascar. The…

We investigate the mechanisms by which a student's age relative to classmates (i.e., relative age) influences risky health behaviors among European adolescents. Using a two-stage least squares approach, we show that relatively young students are more prone to engage in risky behaviors. These results hold after controlling for absolute age, country…

Neighborhood-level collective efficacy protects Black youth from substance use; however, neighborhood research does not account for the entirety of adolescents' exposure or their perceptions of space which may be critical to understanding the role of context in substance use. To address this limitation, the SPIN Project recruited 65 Black…

Background: Most health and developmental issues affecting young people are interrelated. However, few interventions address multiple behavioral domains simultaneously or are based on theories that encompass a holistic perspective of youth development. Aim: The purpose of this scoping review was to identify and describe the range of theory-based,…