Peter Bluckert is a writer and pioneer in leadership development coaching and facilitation. Working from a Gestalt approach and methodology, he is shaping a new and radical approach to vertical development practice. In this short book in the Expand the Possible series entitled A comprehensive guide to vertical development, Peter synthesises a body of profound theory in an accessible and clear way and... • Presents a solid, reliable introduction to adult development theory which essentially describes how adults develop more complex and comprehensive ways of making sense of themselves and their experience. • Sets out the main adult development frameworks and stage definitions. • Maps the territory of adult development. • Compares and contrasts horizontal learning and vertical development. • Applies vertical development to organisational leadership. This book is written for current and next-generation business leaders; Talent and OD Directors and their teams; Learning and Development professionals; coaches and facilitators; and anyone in the fields of personal and professional development.