Kiran Kumar Salagame, PhD, is former chairman of the psychology department at the University of Mysore, India. He is also vice-president of the International Transpersonal Association. He is author of The Psychology of Meditation: A Contextual Approach.

Etzel Cardeña holds the endowed Thorsen Chair in psychology at Lund University in Sweden, where he directs the Center for Research on Consciousness and Anomalous Psychology (CERCAP). Among his books are Varieties of Anomalous Experience published by the American Psychological Association (APA) and now in its second edition, the two-volume Altering Consciousness: A Multidisciplinary Perspective, [...]