Adolescent sleep deprivation is a pressing public health issue in the United States as well as other countries. The contexts of adolescents' lives are changing rapidly, but little is known about the factors that adolescents themselves believe affect their sleep. This study uses a social-ecological framework to investigate multiple levels of perceived influence on sleep patterns of urban adolescents. Data were drawn from interviews and surveys conducted in three California public high schools. Most participants identified homework as their primary barrier to sleep, particularly those engaged in procrastinating, multitasking, or those with extracurricular demands. Results indicate that the home context has important implications for adolescent sleep, including noise, household rules, and perceived parent values. These findings identify important areas for future research and intervention, particularly regarding the roles of parents.
The last decades of neuroscience research have produced immense progress in the methods available to understand brain structure and function. Social, cognitive, clinical, affective, economic, communication, and developmental neurosciences have begun to map the relationships between neuro-psychological processes and behavioral outcomes, yielding a new understanding of human behavior and promising interventions. However, a limitation of this fast moving research is that most findings are based on small samples of convenience. Furthermore, our understanding of individual differences may be distorted by unrepresentative samples, undermining findings regarding brain–behavior mechanisms. These limitations are issues that social demographers, epidemiologists, and other population scientists have tackled, with solutions that can be applied to neuroscience. By contrast, nearly all social science disciplines, including social demography, sociology, political science, economics, communication science, and psychology, make assumptions about processes that involve the brain, but have incorporated neural measures to differing, and often limited, degrees; many still treat the brain as a black box. In this article, we describe and promote a perspective—population neuroscience—that leverages interdisciplinary expertise to (i) emphasize the importance of sampling to more clearly define the relevant populations and sampling strategies needed when using neuroscience methods to address such questions; and (ii) deepen understanding of mechanisms within population science by providing insight regarding underlying neural mechanisms. Doing so will increase our confidence in the generalizability of the findings. We provide examples to illustrate the population neuroscience approach for specific types of research questions and discuss the potential for theoretical and applied advances from this approach across areas.
