Welch has been a pioneer in the treatment of mother-child relational health for over 40 years. Her decades of clinical observation have led to a new paradigm employing mother-child co-regulatory vs. selfregulatory processes in establishing optimal maternal and child health and well-being. Welch leads a multidisciplinary team of researchers in testing her Family Nurture Intervention and exploring the underlying biological phenomenon she termed autonomic and emotional coregulation. Emotional co-regulation is the key component of her Calming Cycle Theory, which posits that maternal and child symptomatic physiology and behavior can be eliminated through re-establishing and maintaining bottom-up visceral/autonomic co-regulatory processes within the family, initially between the mother and child. Welch received her medical degree from Columbia University College of Physicians & Surgeons. She is a Diplomate of the American Board of Psychiatry and Neurology and a Distinguished Fellow of the American Psychiatric Association.