Louise Arseneault is a Professor of Developmental Psychology at King’s College London and the ESRC Mental Health Leadership Fellow. Her research focuses on the development of mental health problems throughout the life course and how social relationships influence the onset and recurrence of mental illnesses. Her studies combine developmental research, epidemiological methods, and genetically sensitive designs. She is currently leading the Landscaping International Longitudinal Datasets project, funded by the Wellcome Trust, and is still actively working on the Catalogue of Mental Health Measures.