Keith Harary, Ph.D., has spent decades investigating the issues confronting those who are coping with extraordinary experiences. He is well known for the groundbreaking studies of out-of body experiences conducted on the campus of Duke University in the early seventies. His research has included extensive laboratory and field research on the physiological and other variables associated with altered states of consciousness, including the development of specialized methods for actively inducing out-of-body experiences and other altered states.

Harary holds a Ph.D. in psychology, with emphases in both clinical counseling and experimental psychology. He has authored or co-authored hundreds of articles and eight books on topics related to perception, altered states of consciousness, personality, and related topics, including several titles in the In 30 Days series. He is currently Research Director of the Institute for Advanced Psychology in Tiburon, California, where he continues to conduct research in perception and other areas in association with an interdisciplinary consortium of scientists.