Purpose: An official autism diagnosis is required to access timely intervention and is associated with better long-term wellbeing and mental health. Certain demographic characteristics, such as being female or a racially or ethnically minoritized youth, have been associated with significant diagnostic lag. However, it remains unclear how assigned…

Objective: To estimate the percentage of U.S. working-age (18- to 64-year-old) adults in 2023 who self-reported ever being diagnosed with ADHD by a health care professional. Method: We analyze data from the 2023 National Wellbeing Survey (N = 7,053) to estimate self-reported lifetime ADHD diagnosis status among working-age adults, overall and by…

Purpose: The purpose of this journal-ready dissertation was to determine the extent to which differences existed in the attainment of Texas Education Agency approved industry-based certifications of Texas high school graduates by their ethnicity/race, gender, and economic status. In the first study, the degree to which the attainment of Texas…

Despite high rates of mental health concerns among youth, they are unlikely to receive mental health care, with mental health stigma acting as a barrier. The present study explores youth perceptions of the influences of stigma and what should be done to address it, drawing on a large (n = 705) mixed methods dataset of youth aged 14 to 24 from the…

Students in the foster care system tend to have lower educational outcomes than their peers, including more frequent disciplinary events. However, few studies have explored how transitions into and out of foster care placements are associated with educational outcomes. Using longitudinal data from four California school districts, this study…

Objective: This study explored the structure validity and sex and country measurement invariance for Filipino and U.S. adults using the Five Factor Wellness Inventory (FFWEL-A2). Method: Confirmatory factor analysis and measurement invariance were conducted to determine consistency of responses across sex and country categories. Factorial ANOVAs…

Attention-deficit/hyperactivity disorder (ADHD) is one of the most common mental disorders of childhood. It is characterized by a pattern of inattention, impulsivity, or hyperactivity that leads to functional impairment experienced in multiple settings. Symptoms of ADHD occur during childhood, and many children continue to have symptoms and…

The capacity of the workforce lags behind the current demand for timely autism diagnostic assessment. Primary care providers (PCPs) are well-positioned to diagnose autism at earlier ages than providers from other disciplines. Thus, bolstering PCPs' diagnostic capabilities has been the focus of many recent capacity-building initiatives. Using data…

Firearm suicides among adolescents have increased in the US and rates vary across racial and ethnic groups. In this study, we examined contextual information around adolescent firearm suicides and analyzed how incident characteristics vary across racial and ethnic groups. We analyzed firearm suicides among adolescents (ages 10-18 years) from 2004…

Using the 2017-2018 National Health and Nutrition Examination Survey (weighted population size = 35,460,209; 8-18 years old; 52.1% males), we compared the obesity prevalence in children and adolescents between body mass index-based (BMI-based) and total percent body fat-based (BF%-based, measured by the dual-energy x-ray absorptiometry) cutoffs.…

Recent empirical research shows that air pollution harms student test scores and attendance and increases office discipline referrals. However, the mechanism by which air pollution operates within schools to negatively affect student and teacher outcomes remains largely opaque. The existing literature has primarily focused on the effects of…

Purpose: Almost all epidemiologic studies estimating autism spectrum disorder (ASD) prevalence have focused on school-age children. This study provides the first population-based data on the prevalence and expression of ASD among adolescents in a large US metropolitan region. Methods: Active multiple source ASD surveillance of adolescents aged…

This study aimed to validate a modified Statistics Anxiety Scale for students in the United States taking university courses. Modifications were made by changing the wording of several items to be consistent with American English, and to accommodate students taking statistics courses in various formats. Items were added to investigate anxiety…

Problem Addressed: To better understand the factors associated with family cancer history (FCH) information and cancer information seeking, we model the process an individual undergoes when assessing whether to gather FCH and seek cancer information and compare models by sociodemographics and family history of cancer. We used cross-sectional data…

Although the trajectories of children's social skills have been examined across biological sexes, less research has examined these patterns for racially and ethnically diverse children in the United States. The purpose of this study was to estimate the longitudinal growth trajectories of social skills, while examining the influence of biological…