(September, 2014) Dr. Wendy Mendes of the University of California, San Francisco, discusses her research, "Effects of Measured and Manipulated Gratitude on Biomarkers of Health and Aging." Dr. Mendes’ study examines whether trait levels of gratitude are related to better health outcomes, as indicated by key biomarkers related to stress, resilience and healthy aging, and examine whether this relationship is affected by other life factors like social support or (inversely) loneliness. Further, Mendes’s project examines the biological profile of real-time gratitude experience, by inducing gratitude and measuring physiology within the lab setting. (11:26)