Ruth is Chair and Professor of Jurisprudence at the University of Oxford, and a Professorial Fellow at University College, Oxford. She has a Doctorate in Philosophy from the University of Oxford, a J.D. from Harvard Law School, and an A.B. from Dartmouth College. Her research focus is oriented on nature of normativity, the structure of values and reasons, practical reason, agency, rationality, population ethics, love and commitment, decision-making and the self. Before her life as a professor and philosopher, Chang worked as a law associate on a pro bono death penalty case and several product liability and medical malpractice cases. Her work has been the subject of interviews and media outlets globally and she has been a lecturer or consultant to many institutions and industries including video gaming, the CIA, the U.S. military and the World Bank.

At THE NEW INSTITUTE Ruth was involved in the program "Socio-Economic Transformation".