Somerville became interested in adolescent neurodevelopment due to her own experiences as a teenager. She spent four years volunteering as a teen crisis counsellor, and intended to pursue a career in social work. Whilst an undergraduate at the
University of Wisconsin, she became interested in affective neuroscience. Somerville was eventually a doctoral student at
Dartmouth College, where she studied the neural mechanisms of anxiety, negativity and threat. After earning her doctoral degree, Somerville joined the Sackler Institute for Developmental Biology. During her postdoc she looked to combine an appreciation of development into emotion. == Research and career ==