The heterogeneity in the developmental trajectories of math motivational beliefs (i.e., expectancies for success and subjective task value beliefs) was examined among Asian and Latinx male and female students from Southern California across Grades 8 through 10 (n = 2,710; 50% female; 85% Latinx; 15% Asian; M[subscript age] = 13.77). By conducting…

In adolescence, being rejected by one's peers is positively associated with aggression. However, whether self-perceptions of being rejected or accepted by peers, and biases in these perceptions, are linked to aggression remains unclear, as the literature points to 2 perspectives: Youth are more likely to be aggressive when they (a) know or believe…

Throughout adolescence, both sleep and emotion regulation abilities undergo significant developmental changes. The maturational systems that govern sleep and emotion regulation are closely intertwined leading many researchers to posit a mutually reinforcing relationship. Although there is support for a bidirectional relationship among adults,…

Youth with greater levels of narcissism face a wide array of difficulties in interactions with others. However, there exists a curious lack of research on their close relationships, such as friendships. In this study, we examined associations between narcissism and friendship features over time. Participants were 261 eighth and ninth graders (112…

Executive function (EF) has rarely been considered for adolescents' daily school outcomes or in conjunction with ethnic/racial discrimination. Using 2-week, daily data from 137 ethnic/racial minority adolescents (M[subscript age] = 14.56; 53% female; 56% Black, 19% Latinx, 7% Asian, 7% Native, 12% other [e.g., multiracial]) in the Midwest United…

Peer victimization is a common concern in adolescence that includes both relational (e.g., exclusion, rumor spreading) and overt (e.g., hitting, threatening) forms (Crick & Bigbee, 1998). Relational and overt peer victimization have shown to be differentially associated with depressive symptoms, with relational peer victimization showing a…

Nowadays, an increasing number of children and adolescents living in Europe have an immigrant background. Because ethnicity is a recognizable characteristic that may become the driver of bullying, these youths are at high risk of victimization. School interventions based on peer-led approaches, assuming all the conditions postulated in contact…

Adopting the constructs of exposure, reactivity, and recovery, from stress and coping frameworks, this study investigated three models of discrimination, adjustment, and ethnic/racial identity among 76 African American, 145 Asian American, and 129 Latinx adolescents who were majority United States-born. The sample includes adolescents sampled from…

Many studies have found that males, on average, perform better than females in mathematics, although the size of this gender gap is small and varies considerably across countries. Stereotype threat has been proposed as a principal cause of this gender gap. From this perspective, females' performance is affected by fear of confirming a negative…

Guided by the life course perspective, this study investigated the developmental antecedents of contact, closeness/warmth, and negativity in young adults' relationships with their parents. Taking the developmental systems approach, we considered interindividual differences in not only initial levels of parenting quality in early adolescence (Grade…

This study examined associations between perceived popularity trajectories and changes in proactive and reactive aggression in middle adolescence. The sample included 1,374 adolescents from 5 cohorts who were followed from Grade 7 to Grade 9 (49% males, M[subscript age] = 12.67 years, SD = 0.67). Popularity trajectories were identified based on…

Ethnic identity is a consistent predictor of positive youth adjustment, whereas discrimination has been associated with negative outcomes among Latino/a youth. Scholars have proposed associations between ethnic identity and discrimination; however, directionality of effects remains unclear. Addressing this gap, the current study examined the…

This research explored whether experiences with warmth in middle childhood are linked to increased levels of positive affect, decreased levels of negative affect, and decreased levels of disagreeable interactions in text-message communication in adolescence. Participants included 218 children (and their parents and peers) who were on average…

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.…

Building on recommendations from several of the articles in the special section on conscientiousness in the June 2014 issue of "Developmental Psychology," the present study tested predictions from the interactionist model (IM) of socioeconomic influences on individual development. In an approach consistent with the idea of cumulative…