a book by by Rebecca Selligman This book describes an ethnographic study of the psychophysiology of Candomblé mediumship. Combining ethnography and psychophysiology proved to be hard, and the author describes several obstacles, including the difficulty of maintaining a balance between recruiting a large enough sample for the study to be valid and building a trusting rapport with the participants.  The central premise of the book is that the process of self-transformation in Candomblé spirit possession mediumship is a process with the potential to heal both mind and body. This idea is based on the finding that all mediums that the author interviewed for the study had come to become mediums…