Principal Investigators: Rachel Goldberg and Marta Tienda
Funder: The Center for Health and Wellbeing, Princeton University
The mDiary study follows a subsample of teens who have completed core surveys in the Year 15 follow-up of FFCWS. Teens use a smart phone application or a web browser to complete bi-weekly surveys, which ask about family, peer group, and romantic relationships. There are also questions about the teen’s mood, school experiences, substance and time use, and expectations for the future.
Biopsychosocial Determinants of Sleep and Wellbeing for Teens in FFCWS
Principal Investigators: Lauren Hale and Orfeu Buxton
Funder: National Institutes of Health (5R01HD073352)
Approximately 1,000 teens completing phone surveys during the Year 15 follow-up wave of FFCWS will wear wrist and hip actigraphs for a one-week period following the home visit. This actigraphic data will allow researchers to directly monitor sleep timing, duration, and quality in addition to physical activity. During this same week, participants will provide a one-week multimedia exposure diary. Together, these measures will allow researchers to study the biopsychosocial (e.g., socioeconomic status, neighborhood factors, genetic) determinants of adolescent sleep patterns and their associations with biological (i.e., obesity) and psychological (i.e., depression) outcomes. Researchers will also be using this data to study the direct and indirect effects of physical activity and screen time exposure on adolescent sleep, health, and wellbeing.
Adolescent Wellbeing and Brain Development
Principal Investigators: Colter Mitchell, Christopher Monk, and Luke Hyde
Funder: National Institutes of Health (5R01MH103761)
Following the completion of the Year 15 core home visit activities, teens in the FFCWS sample cities of Detroit and Toledo are being asked to participate in a ½ day session of additional activities at the University of Michigan, including brain scan, measurement of cortisol reactivity, collection of hair, blood spots, and saliva, as well as clinical interviews and videotaping. Researchers are studying the relationship between poverty-related stress and affective function at four levels of analysis: brain, physiological, behavioral, and self/parent report measures. A major aim of this research is better characterize mental health conditions that result from poverty-related stress -- by identifying the mechanisms through which this stress alters brain and hypothalamic-pituitary-adrenal (HPA) axis function.
Reciprocal Genetic-Environmental Interactions
Principal Investigator: Daniel Notterman
Funder: National Institutes of Health (5R01HD076592)
This study is examining levels of and changes in telomere length (TL) and DNA methylation (DM) among child and teen participants in FFCWS and is identifying early social environmental predictors of these variable genetic characteristics. This study will assay TL and DM for children from saliva collected at Year 9 and Year 15. Researchers are examining the interaction between the social environment from infancy through early adolescence and: (a) telomere length and changes in telomere length between ages 9 and 15, (b) DNA methylation and changes in DNA methylation between ages 9 and 15, and (c) fixed genetic variants (i.e. SNPs). They are also investigating the influence of the interaction of children’s measured genetic differential sensitivity and their social environment on telomere length and DNA methylation.