Biculturalism embodies the degree to which individuals adapt to living within two cultural systems and develop the ability to live effectively across those two cultures. It represents, therefore, a normative developmental task among members of immigrant and ethnic-racial minority groups, and has important implications for psychosocial adjustment. Despite a strong theoretical focus on contextual influences in biculturalism scholarship, the ways in which proximal contexts shape its development are understudied. In my dissertation, I examine the mechanisms via which the family context might influence the development of bicultural competence among a socio-economically diverse sample of 749 U.S. Mexican-origin youths (30% Mexico-born) followed for 7 years (Mage = 10.44 to 17.38 years; Wave 1 to 4).

In study 1, I investigated how parents’ endorsements of values associated with both mainstream and heritage cultures relate to adolescents’ bicultural competence. Longitudinal growth model analyses revealed that parents’ endorsements of mainstream and heritage values simultaneously work to influence adolescents’ bicultural competence. By examining the effect of multiple and often competing familial contextual influences on adolescent bicultural competence development, this work provides insights on intergenerational cultural transmission and advances scholarship on the culturally bounded nature of human development.

In study 2, I offer a substantial extension to decades of family stress model research focused on how family environmental stressors may compromise parenting behaviors and youth development by testing a culturally informed family stress model. My model (a) incorporates family cultural and ecological stressors, (b) focuses on culturally salient parenting practices aimed to teach youth about the heritage culture (i.e., ethnic socialization), and (c) examines bicultural competence as a developmental outcome. Findings suggest that parents’ high exposure to ecological stressors do not compromise parental ethnic socialization or adolescent bicultural competence development. On the other hand, mothers’ exposures to enculturative stressors can disrupt maternal ethnic socialization, and in turn, undermine adolescents’ bicultural competence. By examining the influence of multiple family environmental stressors on culturally salient parenting practices, and their implications for adolescent bicultural competence development, this work provides insights on ethnic-racial minority and immigrant families’ adapting cultures and advances scholarship on the family stress model.

The central focus of this dissertation was to build on prior research that has underscored the significance of investigating culturally informed values and beliefs to promote racial-ethnic minority youths’ adjustment. In particular, Study 1 examined how Mexican-origin adolescents’ endorsements of familism values contributed to and moderated established theoretical associations within the achievement motivation process (i.e., contextual environment/individual factors, motivational beliefs, achievement-related strategies) and ultimately informed educational adjustment over time, or 5 years postpartum. Findings from Study 1 supported hypotheses regarding the dual role of familism values as both a promotive and protective factor throughout the achievement motivation process. Importantly findings highlight familism as an important cultural asset to consider as a potential facilitator of Mexican-origin adolescent mothers’ postpartum educational attainment. In addition to examining the promotive and protective function of familism, Study 2 explored how constellations of culturally informed promotive and protective factors, based on familism values, familial ethnic socialization, mothers’ and adolescents’ education aspirations, and social support (from family, peers, and dating partners), directly informed Mexican-origin adolescent mothers’ educational adjustment postpartum. Three distinct profiles emerged across social, aspirational, and familial domains, when adolescents were in their third trimester of pregnancy. Profiles were distinguished by unique patterns among study variables as a function of different levels of assets and resources. Furthermore, coresidency and economic hardship emerged as significant predictors of membership into latent profiles; and membership in specific profile groups significantly predicted educational attainment five years postpartum. Patterns of promotive/protective factors identified in the current study illustrate the importance of considering how the combination of multiple factors, across culturally salient domains, work in tandem to inform Mexican-origin adolescent mothers’ long-term educational attainment. Overall study findings offer a comprehensive insight into how familism values and other culturally informed factors contribute to the achievement motivation process and educational adjustment of pregnant and parenting Mexican-origin adolescent.

The overarching goal of this dissertation was to contribute to the field’s understanding of young children’s development of ethnic-racial identification. In particular, Study 1 presented the adaptation of three measures that are developmentally appropriate for assessing young children’s ethnic-racial attitudes, ethnic-racial centrality, and ethnic-racial knowledge, and tested the psychometric properties of each measure. Findings from Study 1 provided limited initial support for the construct validity and reliability of the measures; importantly, there were many differences in the descriptives and measurement properties based on the language in which children completed the measures. In addition to measurement of ethnic-racial identification, Study 2 used the measures developed in Study 1 and tested whether Mexican-origin mothers’ adaptive cultural characteristics (i.e., ERI affirmation, ethnic-racial centrality, and involvement in Mexican culture) when children were 3 years of age predicted greater cultural socialization efforts with children at 4 years of age and, in turn, children’s ethnic-racial identification (i.e., children’s ethnic-racial attitudes, ethnic-racial centrality, ethnic-racial knowledge, and identification as Mexican) at 5 years of age. Furthermore, children’s characteristics (i.e., gender and skin tone) were tested as moderators of these processes. Findings supported expected processes from mothers’ adaptive cultural characteristics to children’s ethnic-racial identification via mothers’ cultural socialization across boys and girls, however, relations varied by children’s skin tone. Findings highlight the important role of children’s individual characteristics in cultural socialization and young children’s developing ethnic-racial identification over time. Overall, given the paucity of studies that have examined ethnic-racial identification among young children, the results from Study 1 and Study 2 have the potential to stimulate growth of knowledge in this area.

The primary goal of this study was to extend previous research on traditional masculinity by examining the longitudinal associations between traditional masculinity, school engagement and attitudes toward school in a sample of middle school students. Following a sample of 338 (Mage = , SDage = , 54% male, 46% Latino) students from the 7th to 8th grades, I examined how students' self-reported endorsement of and adherence to physical toughness and emotional stoicism norms of masculinity were associated with their engagement with school and their attitudes of school liking and school avoidance. I also examined whether the endorsement and adherence to these norms varied by sex and ethnicity, and whether they changed over the one-year period. Results indicated that endorsing and adhering to masculinity norms of emotional stoicism were negatively associated with school engagement, after controlling for school engagement at Time 1. Furthermore, endorsing and adhering to masculinity norms of physical toughness were negatively associated with attitudes of school liking even when controlling for school liking at Time 1. These results were the same boys and girls, and for Latino and White adolescents. Moreover, results indicated sex, but no ethnicity differences in traditional masculinity, such that males generally reported higher levels of endorsement and adherence to norms of physical toughness and emotional stoicism. There were also identifiable developmental patterns in traditional masculinity over a one-year period. The contributions of these findings to the current scholarship on masculinity, along with their implications for future research and practice, are discussed.

Organized activity participation is associated with a wide array of positive developmental outcomes. Latinos are one of the largest and fastest growing ethnic groups in the U.S., yet are less likely to participate in organized activities than their peers. Theoretically, the alignment or fit between adolescents' and their activities' characteristics is critical to support youths' use and engagement in organized activities. Using qualitative data in Study 1, I examined parents' and adolescents' perspectives and experiences related to several indicators of ethnicity and culture in their activities. Results suggested that alignment on Spanish-language use was critical for participation. However, some Latino families did not prefer aspects of ethnicity and culture in their activities because adolescents learned about their culture with family or because adolescents wanted to fit in with their majority White peers. Study 2 tested quantitatively whether features of ethnicity and culture in the activity mattered for Latino adolescents' experiences during activities. Ethnic and cultural features in activities, particularly respect for one's ethnicity and culture, fostered positive experiences during activities. Unexpectedly, some ethnic and cultural features were detrimental, such that overt teaching about ethnicity and culture was related to negative feelings during the activity. There was little evidence that the relation between ethnic and cultural features in activities and concurrent experiences varied by Latino cultural orientation. Integrating the findings across these two studies, there was mixed evidence for the traditional theoretical notions that optimal development occurs in environments that fit with individual's characteristics. Complementary fit was optimal when adolescents' needs were considered across the many contexts in which their lives are embedded, including their families and neighborhoods. I recommend that practitioners should take care in learning about the specific families and youth that their activity serves to best understand how to meet their needs. Some aspects of culture, such as Spanish-language use may be critical for participation; other aspects may require special attention from activity leaders, such as teaching about ethnicity and culture. This dissertation is an important step in understanding how to best design activities that promote the recruitment and retention of Latino youth in organized activities.

Mexican-origin adolescent females have the highest birthrate of all other ethnic groups in the U.S. Further, teen mothers are at significant risk for poor outcomes, including low educational attainment. Therefore, examining predictors of Mexican-origin teen mothers' educational attainment was the main goal of the current study. Future-oriented beliefs such as educational aspirations and expectations are suggested to have positive implications for adolescents' educational attainment in general. Therefore, guided by bioecological, social capital, status attainment, social learning, and collective socialization of neighborhood theories, the current study examined neighborhood, maternal, and cultural predictors of 190 Mexican-origin parenting adolescents' educational aspirations, expectations, and attainment. With respect to maternal predictors, the study examined mother figures' (i.e., grandmothers') educational attainment, and aspirations and expectations for the adolescent as predictors of adolescents' educational attainment. Using a multi-informant, longitudinal analytic model, results suggest that adolescents' educational expectations, rather than aspirations, significantly predicted adolescents' attainment one year later. Additionally, grandmothers' educational attainment was indirectly associated with adolescents' educational attainment via the educational expectations of both the grandmother and the adolescent. Further, the neighborhood context indirectly informed adolescents' educational attainment via both grandmothers and adolescents' educational expectations. Finally, adolescents' ethnic identity affirmation was significantly associated with adolescents' educational attainment two years later. Implications regarding the importance of educational expectations and ethnic identity affirmation for at-risk parenting adolescents' educational attainment will be discussed.

Ethnic identity has consistently been associated with Latino youths' psychosocial well-being; however, an area that has received much less attention is how parents' characteristics inform their ethnic socialization efforts and, in turn, youths' ethnic identity. In addition, we know little about how this process unfolds in specific at-risk samples of youth, such as adolescent mothers. Thus, the current prospective study examined how mothers' cultural characteristics informed adolescents' and mothers' reports of ethnic socialization, and how this, in turn, informed adolescents' ethnic identity exploration and resolution among a sample of 193 adolescent mothers and their mothers. In addition, the current study tested whether mothers' ethnic identity affirmation was directly related to adolescents' ethnic identity affirmation over time. Results indicated that mothers' familism was associated with increases in mothers' reports of maternal ethnic socialization, and, in turn, with increases in ethnic identity exploration for foreign-born adolescents, and decreases in ethnic identity exploration for U.S.-born adolescents. In addition, adolescents' reports of familial ethnic socialization were associated with increases in their ethnic identity exploration and resolution. Finally, mothers' ethnic identity affirmation was associated with increases in adolescents' ethnic identity affirmation. Findings are discussed with special attention to the importance of mothers' cultural values in how they socialize their adolescents, and this impact on adolescents' ethnic identity, as well as the implications this study has for interventions focused on bolstering positive outcomes for adolescent mothers.

In this dissertation Mexican American (MA) youths environmental risk contexts, HPA axis functioning and mental health symptomatology were investigated in two separate studies. In the first study, environmental risk contexts were examined utilizing a person-centered approach and focusing on MA adolescents' family, peer, and cultural risk factors in fifth grade (N = 750). Environmental contexts were then linked to mental health symptomatology in seventh grade. Results revealed three distinct environmental contexts: Low risk, Moderate risk-language, and High risk-peer. Youth in the High-risk peer context reported the highest levels of symptomatology; greater major depressive disorder (MDD), anxiety, conduct disorder (CD)/oppositional defiant disorder (ODD), and attention deficit hyperactive disorder (ADHD) symptoms than youth experiencing Low risk or Moderate risk-language context. Females, in particular, experiencing the High risk peer context appeared at greatest risk for MDD symptoms. Finally, adolescents in the Moderate risk-language context displayed similar levels of symptoms to the individuals in the Low risk context, with the exception of higher anxiety. This study suggested that MA youth live in unique environmental contexts and these contexts are differentially related to mental health symptomatology. In the second study, 98 MA youth participated in a three-day diurnal cortisol protocol in hopes of linking perceptions of discrimination and HPA diurnal cortisol rhythms. Results revealed that discrimination was related to greater overall cortisol output and marginally related to the cortisol awakening response and evening levels of cortisol. Results suggest that important physiological processes underlie the experiences of discrimination.

Previous research suggests that the relation between sport participation and alcohol use is positive, but small in size. Few explanations for this positive relation have been empirically tested. Theories denote that the relation between sport participation and alcohol use is explained by peers and that the relation varies based on the models adolescents are exposed to. This study tested mediators (popularity and friends' alcohol use) and moderators (sport-focus, teammates' alcohol use, gender, popularity, and friends' alcohol use) for the relation between sport participation and alcohol use. Analyses were conducted through path models in Mplus v5.1. The sample included 48,390 adolescents (mean age=15.8 years; 51% female) from the National Longitudinal Study of Adolescent Health. In the self-administered in-school questionnaire, adolescents reported on their activity participation, alcohol use, friendship nominations, and demographic characteristics. Friend indicators were based on friends' self-reported alcohol use. Results suggested that popularity mediated, but did not moderate the relation between sport participation and alcohol use. In contrast, friends' alcohol use moderated, but did not mediate this relation. The relation was positive and strongest for sport-focused adolescents, and for adolescents whose teammates and sport friends used high levels of alcohol. The findings of this study suggest athletes are at an elevated risk for alcohol use, but not all athletes drink. Peers are important predictors, such that, sport participation may be related to alcohol use, partially, because it promotes adolescents' social status. The sport context is also important, such that, athletes are more likely to use alcohol if they are highly involved in sports, and they have sport friends and teammates who drink. Specific types of athletes, such as popular athletes, should be targeted for alcohol use interventions. Intervention programs should also be designed to capture specific aspects of the sport context, such as teams without no tolerance substance use policies, and highly competitive or stressful sports.