About the Author

Stanley Krippner, Ph.D., former director of the Maimonides Medical Center Dream Research Laboratory, is a professor at California Institute of Integral Studies. He is a fellow in the American Psychological Association (APA) and the Association for Psychological Science. Adam J. Rock, Ph.D., is a senior lecturer at the School of Psychology at the University of New England, Armidale, NSW, Australia. His primary research interests are in the area of altered states of consciousness, mainly focused on shamanism, the conceptual problem of consciousness, and mediumship. Harris L. Friedman, Ph.D., is a retired research professor of psychology from the University of Florida, Gainesville, and is a consulting and clinical psychologist. His many writings primarily focus on transpersonal psychology, as well as on issues related to culture. Nancy L. Zingrone, Ph.D., is a senior core adjunct faculty member in psychology at Northcentral University. She is a life member of the American Psychological Association as well as a two-time past president of the Parapsychological Association, receiving its Outstanding Contribution Award in 2015 for her efforts to improve education in the field.