Marielle Aarts graduated on the light preference of office workers, at the Eindhoven University of Technology. Since 2002, she is an assistant professor at the Building Lighting group, Department of the Built Environment (TU/e). She educates students on light and lighting and in her research she aims to define light strategies for a human-centered built environment. Her expertise’s are (day)light, human responses to light, and research methodologies for field studies. Currently her focus is on Healing Environments, specifically hospitals and offices. She is chair of the Light and Health Research Foundation (SOLG) and founding member of the Daylight Academy (DLA).