In this news feature from the Harvard School of Public Health (HSPH), Marge Dwyer describes a recent review of studies led by Erin Dunn, who is a former Julius B. Richmond Fellow [1] at the Center on the Developing Child and a current postdoctoral fellow at Massachusetts General Hospital (MGH). Dunn’s review [2] sought to shed light on how genetic and environmental factors combine to influence the development of childhood depression. Her co-authors included Center-affiliated faculty member Jordan W. Smoller, an associate professor of psychiatry at Harvard Medical School and MGH.