Rollin McCraty, PhD, is the Director of Research at the HeartMath Institute and Research Center. As a psycho-physiologist, Dr. McCraty’s research interests include the physiology of emotion, heart-brain communication, and the global interconnectivity between people and the earth’s energetic systems. Findings from this research have been applied to the development of tools and technology to optimize individual and organizational health, performance, and quality of life. Dr. McCraty has acted as Principal Investigator in numerous studies examining the effects of emotions on heart-brain interactions and on autonomic, cardiovascular, hormonal, and immune system function, and outcome studies to determine the benefits of positive emotion-focused interventions and heart rhythm coherence feedback in diverse organizational, educational and various clinical populations. He has been featured in many documentary films such as I Am, The Truth, The Joy of Sox Movie, The Power of the Heart, Solar Revolution, and The Living Matrix, among many others.