 Subsequently, Reyna joined the faculty of the University of Arizona and was promoted to Professor in 2000 while affiliated with the Departments of Surgery, Medicine, Biomedical Engineering, Mexican-American Studies, and Women's Studies.Reyna moved to the University of Texas at Arlington in 2003 as Professor of Psychology.Professor of Human Development at Cornell University since 2005, she is the director of the Human Neuroscience Institute, the co-director of the Center for Behavioral Economics and Decision Research and the co-director for the Cornell University Magnetic Resonance Imaging Facility at Cornell.