The participatory turn: review of Jorge N. Ferrer, Revisioning Transpersonal Theory: a...

Ferrer's book (Albany: SUNY, 2002) signals a watershed moment in the evolution of transpersonal theory. As Richard Tarnas persuasively argues in the foreword, this book conceptually furthers the paradigm shift initiated thirty-plus years ago by Maslow and Grof's groundbreaking research into peak and psychedelic experiences, which gave birth to transpersonal psychology. Paradigm shifts, Tarnas suggests, although initiated by revolutionary breaks in theoretical frames, are rarely, if ever, completed at once. They often require subsequent conceptual breakthroughs that confront linger