Dr. Shumate has accomplished something quite remarkable in this book. In it she reintegrates Jung’s systems model of the human psyche - linking typology, projection and archetypes; aspects of Jung’s psychology that have grown apart into separate camps since Jung’s death back in the 1960’s.Carol Shumate teaches a graduate level course in psychological types at Pacifica Graduate Institue’s Depth, Jungian and Archetypal studies program, so she brings years of experience to her scholarship and it shows. Clearly she is very well read and she integrates a wide range of materials - carefully citing and referencing her sources. Her familiarity with Jung goes well beyond his book Psychological Types, referencing broadly across his entire Collected Works; the Transcendent Function, A Review of the Complex Theory, General Aspects of Dream Psychology, On the Nature of the Psyche,… the list goes on.Similarly she embraces the wider Jungian pantheon, Marie Louise von Franz, Van der Hoop, Daryl Sharpe, Murray Stein, Jolande Jacobi, Robert Johnson. Going further afield she brings in perspectives from academia like Henry Mintzberg, Brian Little, Costa and McCrae… the list goes on.My point is: this is psychological type taken to an entirely new level of academic scholarship. Moreover, the book is head and shoulders above other books about “typology” as it focuses on psychotherapeutic issues like projection, the unconscious, individuation and the shadow. The groundbreaking aspect here is that she returns Jung’s typology to Jungian psychology.I think people who either understand typology and are curious about Jung, or people who understand Jung and psychotherapy but are curious about type from a systems perspective - would get a tremendous value out of the book.I myself have an undergraduate degree in psychology, am certified as am MBTI Master Practitioner and am in the Pacifica doctoral program. I’ve read Psychological Types as well as the type detractors - I’ll tell you this, in my opinion this book goes far far beyond simple categories and classifications to help one understand the systems model of psyche and how we develop our functions, especially at mid-life.Additionally, I feel that the book makes psychoanalyst Dr. John Beebe’s 8 function model a lot more accessible to the lay public than his own writings do. Having read his Energies and patterns book and attended his lectures, his brilliance is better revealed here, at least for the educated lay reader. Shumate is a writer’s writer and her clean prose and lucid examples are easy to understand.Bottom line: This book advances psychology into the 21st century, leaving the behavioral sciences in the dust while it frames our experience of psyche. It’s a truly stunning achievement. I think counselors, psychologists and psychoanalysts would all benefit from reading it. Nevertheless, it is accessible to the enthusiast in typology looking to dig deeper than the simple Myers-Briggs, MBTI codes.Finally, the second half of the book provides a wealth of tables to drill down into the cognitive functions: what is Introverted Intuition, for example, it’s there and moreover how that function shows up for each of the types - even people who prefer sensing - because this book goes into the shadow functions and inferior functions. A veritable wealth of resources in that reference section at the back: 9 tables over 90 pages. Great detail from Shumate’s 30 plus years in the type community. A true tour de force.