The current study examined the developmental trajectory of same-race friendship preference of racially/ethnically diverse students over the course of middle school. Participants were African American, Asian, Latinx, and White youth recruited at the start of middle school in 6th grade (N = 4,361; M[subscript age] = 11.33 years) and followed across…

Despite numerous efforts to attenuate the Black-White discipline gap in U.S. schools, Black students are still suspended for minor infractions at a disproportionately higher rate than their White peers. Using a racially diverse sample (n = 1,515; M[subscript age] = 12.7; 50% boys; 72% Black, 28% White), this 3-year longitudinal study examined…

Person × Environment mismatch theory has been applied to understanding how the classroom social ecology moderates associations between peer victimization and socioemotional well-being. In 2004, Bellmore et al. applied this theory to the ethnic composition and social climate of the classroom. The current study tested whether their findings…

Negative interactions with the legal system can inform adolescents' relationships with schools. The present daily-diary study examined 13,545 daily survey assessments from 387 adolescents (M[subscript age] = 13-14; 40% male; 32% Black, 50% White, and 18% Other ethnic-racial minority) across 35 days to assess whether police stops predicted…

Math and science motivational beliefs are essential in understanding students' science, technology, engineering, and math (STEM) achievement and choices in high school and college. Drawing on the Eccles' expectancy-value theory and Arnett's emerging adulthood framework, this study examined the relations among high school students' motivational…

There is fear that adolescents have limited control over their digital technology use. The current research examines longitudinal (Study 1) and daily (Study 2) associations between U.S. adolescents' self-control and digital technological impairment and use. Using a large sample (N = 2,104; Wave 1: M[subscript age] = 12.36, 52% female, 57%…

This study investigated children's and adolescents' predictions of inclusion and evaluations of exclusion in interracial and same-race peer contexts. The sample (N = 246) consisted of African American (n = 115) and European American (n = 131) children and adolescents who judged the likelihood of including a new peer, evaluated the group's decision…

Adolescence is a developmental period when youth are increasingly likely to turn to their peers for support, and it is also a time of increased salience and development of ethnic-racial identity (ERI). Ethnic-racial centrality, a dimension of ERI, could be a predictor in the development of peer support, as youth with a stronger self-concept on the…

Persistence in high school curricula leading to science, technology, engineering, and mathematics (STEM) careers is structured by complex institutional systems, but developmental processes underlie how young people navigate these systems. This study examined differences in the development of STEM identity and efficacy during high school among…

It is widely believed that there is a crisis of confidence in law enforcement in the United States. What remains to be seen, however, is whether adolescents actually differentiate between legal authorities and other types of authorities. Leveraging cross-sectional, nationally representative data of 12th graders from every year from 2006 to 2017…

The purpose of this longitudinal study was to examine developmental change and gender differences in the Black-White race stereotype endorsement of African American adolescents. In Grades 7, 10, and 12, African American students (N = 563; 313 girls) reported their perceptions of the competence of Blacks and Whites in academic, music, and sports…

The goal of this longitudinal study was to examine the trajectories of ethnic identity exploration and commitment in 538 ethnic-racial minority students during their first 2 years of college. Multilevel modeling analyses demonstrated ethnic identity development continued as students transitioned to college. Specifically, ethnic identity…

This study examines developmental change across adolescence in the similarity of friends versus nonfriends. This differential in similarity is a key aspect of the organization of the peer context of development: The stronger the correlation between friends for an attribute, the more the attribute delineates clustering and divisions of friendships.…

Little is known about the naturalistic development of mindfulness in adolescence and how it relates to changes in emotional well-being. The current longitudinal study examined the development of one dimension of mindfulness, nonreactivity to difficult inner experience (or in more colloquial terms, being able to notice, but "take a step…

This 5-year longitudinal study investigates the development of science identity throughout college from an expectancy-value perspective. Specifically, heterogeneous developmental patterns of science identity across 4 years of college were examined using growth-mixture modeling. Gender, race/ethnicity, and competence beliefs (efficacy for science…