Drawing on years of clinical experience, the authors take readers on a remarkable journey of self-discovery. The "sub personalities" that live with the self are explained, allowing readers to pursue their individual destinies.

The idea of "parts work" is very 'frontier' these days so I was interested to see the Stone's take on it. (Having worked with "Internal Family Systems Work" [Schwartz] and Focusing [Gendlin/Cornell] as well as the earlier versions by Bradshaw et al.)
First, the writing is stilted and clinical. Unnecessarily technical.
As to content... let's just say that the concept isn't given full treatment, here. The introduction suggests that sections of this title were 'spun off' from the second edition to become their own books. (The fact that the Stones have half-a-dozen titles on this subject say something about their commercial interest in the subject.)
Another problem I have with the material is what I refer to as the 'Dianetics Dilemma'... you NEED a partner to do this process. Go to the website for Voice Dialogue and you will see links to PROFESSIONAL facilitators but no mention of other ways of finding a facilitator.
Finally, my biggest argument with this treatment w/ Parts Work is that it doesn't go far enough. Voice Dialogue uses a Gestalt-like process of taking on the voice of a subpersonality and otherwise embodying it in physical/emotional/mental space to get to know it. From this perspective, the facilitator interviews your subpersonality, helping you to gain insight into this part. Afterwards, you come back to 'ego awareness' and discuss the session to get more insight.
That's all well and good but I think that Focusing does a much better job with the process. Voice Dialogue limits the work to parts that are verbal, fully-formed personalities. Focusing is inclusive enough to allow non-verbal, fuzzy personalities to express themselves and be heard. Voice Dialogue also limits itself by setting up categories for the subpersonalities, a priori. There are primary selves, 'Pushers', disowned selves, etc that are already in place, waiting for us to label and manage. Focusing allows the personalities to describe themselves to us, to develop uniquely, with our respect and appreciation.
[Schwartz's Inner Family Systems Therapy, likewise, categorizes the parts and does some of the session with the client vocalizing for the part. Schwartz's work ALSO trains the client to develop a stronger, more beneficent Ego to be able to moderate the subpersonalities.]
In summary, the ideas of Voice Dialogue, to the degree that it lines up with the work of Schwartz, Gendlin/Cornell, Bradshaw, and others... confirms the importance of this work. Does it advance the ideas or present new concepts that improve the practice? I don't think so. I give it a three only because the Stones were one of the pioneers of parts work so I have to tip my hat to them. But I would read other authors and incorporate the Stones writings into what the field, as a whole, is saying.

This chattly volume by a team of husband and wife social scientists offers great insight into the workings of the human personality, and how to handle it.

This is a well written description of the various aspects of the self. As psychotherapists they are able to use working examples to follow a process for discovering the complexities and hidden characteristics that make up the "whole" self. Well worth the read and very helpful if you're looking for practical help.

These two authors are revolutionary in their scope, breath, and personal integration of thier information. As you read this book you know that they truly understand their work and are genuinely on the path they show. These authors are to be admired and appreciated for the transformational work they bring to the field of psychology.

This book truly was the one that changed my life completely and helped me understand all those voices and selves inside me. What a revelation!

Also check out their lesser known classic "You Don't Have to Write a Book!" by Sidra Stone and Hal Stone.