Herbert Grassmann, PhD, is professor of Psychosocial Studies at the Parkmore Institute/South Africa and former Chair of the EABP Research Committee. He lives in Nuremberg, Germany.

Maurizio Stupiggia, PhD, is professor in the department of clinical sciences, University of Milano. He resides in Pianoro, Italy.

Stephen W. Porges, PhD, originator of Polyvagal Theory, is a Distinguished University Scientist and founding director of the Kinsey Institute Traumatic Stress Research Consortium at Indiana University, and a professor of psychiatry at the University of North Carolina. He lives in Atlantic Beach, Florida.