 This study examined the relationship between socio-economic status and brain development and mental health among adolescents. The researchers found that lower income was associated with smaller hippocampal volumes and higher levels of internalizing psychopathology. This association was stronger in states with higher costs of living, but was reduced when these states provided more generous cash benefits for low-income families. Additionally, the researchers observed similar patterns for internalizing psychopathology. They concluded that state-level macrostructural characteristics, such as the generosity of anti-poverty programs, could be important for addressing the relationship between low-income and brain development and mental health. This article was authored by David G. Weisman, Mark L. Hatzambulla, Mina Sikara, and others.