Spring 2026 Research Roundup

In this Research Roundup, we summarize recent journal articles about adolescent development that explore how volunteering affects adolescents’ metabolic health and feelings of purpose, how organized after-school programs can impact adolescents’ ethnic-racial identity development, and how daily air pollution can influence adolescents’ emotional well-being.

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In this Roundup

• ​How Volunteering Affects Metabolic Health and Feelings of Purpose in Black Adolescents From Low-Income Families, January 2026
• Organized After-School Activity and Adolescents’ Ethnic-Racial Identity, March 2026
• The Effects of Daily Air Pollution On Adolescent Emotional Well-Being, June 2026

​How Volunteering Affects Metabolic Health and Feelings of Purpose in Black Adolescents From Low-Income Families

(Volunteering and Metabolic Syndrome and Diabetes in Black Adolescents From Low-Income Families, JAMA Network Open, January 2026)

Volunteering during adolescence may boost cardiometabolic health later in life, according to a study of 1,379 adolescents from lower-income households. In the study, Edith Chen and colleagues analyzed data from a sample of 400 14-to-19 year-old Black adolescents and another sample of 979 11-to-20 year-old Black adolescents who were studied over 14 years. In the first sample, adolescents who reported more frequent volunteering also reported greater purpose in life on average, which predicted better metabolic health during adolescence (purpose has been associated with lower inflammation, cardiovascular disease, and mortality in adults). In the second sample, youth who regularly volunteered during adolescence had a more than 50 percent reduction in the odds of adult diabetes diagnosis compared with those who did not volunteer.

Why this is important: This research suggests that volunteering during adolescence can benefit long-term cardiometabolic health, potentially by boosting one’s sense of purpose. Opportunities for adolescents to volunteer in their communities, particularly in ways that can enhance their sense of purpose, may improve psychological and physical health in youth from historically marginalized communities.

​Organized After-School Activity and Adolescents’ Ethnic-Racial Identity

(Organized After-School Activity and Adolescents’ Ethnic-Racial Identity: A Systematic Literature Review, Developmental Review, March 2026)

Research suggests that strong positive ethnic-racial identity is associated with better academic, psychological, and health outcomes. Are there specific experiences that can promote ethnic-racial identity development during adolescence? In a systematic review of 35 empirical studies of middle school and high school students, Fuko Kiyama and colleagues examined whether participation in organized afterschool activities can boost ethnic-racial identity development during adolescence. They found that participation in after-school activities was linked to ethnic-racial identity development, particularly when adolescents sustained their participation over time and when adolescents participated in a range of different types of activities. The researchers noted that after-school activities appear to promote ethnic-racial identity development by fostering a sense of inclusion, agency, and personal growth in adolescents and by offering a space where adolescents feel welcome to explore and discuss their identities.

Why this is important: This study provides evidence that after-school activities can be an avenue to promote ethnic-racial identity development in adolescence. The researchers highlight concrete recommendations for ways in which programs can create an environment where adolescents can explore their ethnic-racial identity, such as by collaborating with families and communities, providing opportunities that promote adolescents’ sense of belonging, and structuring schedules to align with adolescents’ familial and cultural obligations.

The Effects of Daily Air Pollution On Adolescent Emotional Well-Being

(The effects of daily air pollution on affect in adolescents: An ecological momentary assessment study, Journal of Affective Disorders, June 2026)

Air pollution is harmful to our physical health, but does it also affect our emotional well-being? In a recent study, Sarah Rocha and colleagues assessed daily levels of air quality (carbon monoxide, nitrogen dioxide, ozone, and particulate matter), mood, and stress levels over two weeks in a sample of 158 adolescents (13 to 20 years old). The researchers found that, on days with higher levels of air pollution, adolescents reported fewer positive emotions and experienced more pronounced fluctuations in their mood. Air pollution was also associated with how adolescents responded to stress: Adolescents reported greater increases in negative emotions in response to stressful situations on days in which air pollution was higher. This suggests that, in addition to affecting overall mood, air quality may also affect adolescents’ ability to regulate emotions in response to stress.

Why this is important: This research provides further evidence of the crucial role that our physical environment plays in our emotional development during adolescence. These findings suggest that efforts to improve air quality may not only improve physical health in communities, but may also benefit everyday emotional well-being in youth.