Transpersonal psychology book:

Completing Piaget's Project: Transpersonal Philosophy and the Future of Psychology. St Paul, Massachusetts: Paragon House

Some of Ed's academic papers on transpersonal psychology/anthropology:

Dale, E. (2014b). Spiritual Consciousness and the Age of Quantity: The Strange Case of Jean Piaget's Mysticism. Journal of Consciousness Studies, 21, 97-119

Dale, E. (2014a). Variability in the emergence point of transpersonal experience in the life cycle. Anthropology of Consciousness, 25, 143–164

Dale, E. (2013), Neo-Piagetian transpersonal psychology: A new perspective. Journal of Transpersonal Psychology, 45, 118-138

Dale, E. (2012). The equilibration of the self and the sense of sublation: Spirituality in thought, music, and meditation. Journal of Mind and Behavior, 33, 219–232

Dale, E. (2011). Evolutionary developmental biology, the human life course, and transpersonal experience. Journal of Mind and Behavior, 32, 277–294