"A highly practical book"
This book exceeded my expectations. To be honest, I've never seriously read any conceptions about human personality traits, and so I cannot qualify it in comparison to anything. Nevertheless, I think this book to be very efficient -- it provides a clear description of the author's suggested personality types, so clear, that you can construct a mental "filter" and easily predict a personality type of somebody you interact with or somebody you are being told about. With some practice, you may achieve a possibility to predict one's actions and reactions, based on your knowledge of personality types.