Dennis D. Embry is a prominent prevention scientist in the United States and Canada, trained as clinician and developmental and child psychologist. He is president/senior scientist at PAXIS Institute in Tucson and co-investigator at Johns Hopkins University and the Manitoba Centre for Health Policy. His work and that of colleagues cited in 2009 the Institute of Medicine Report on The Prevention of Mental, Emotional, and Behavioral Disorders Among Young People. Clinically his work has focused on children and adults with serious mental illnesses. He was responsible for drafting of the letter signed by 23 scientists, who collectively represent scores of randomized prevention trials of mental illnesses published in leading scientific journals. In March 2014, his work and the work of several signatories was featured in a Prime-TV special on the Canadian Broadcast Corporation on the prevention of mental illnesses among children—which have become epidemic in North America. Dr. Embry serves on the Children’s Mental Health Network Advisory Council.