This book is written for researchers from the medical and social sciences, and for health professionals wishing to evaluate the progress of their patients suffering from Parkinson Disease. The book is both exhaustive in the description of the scales and informative on the advantages and limitations of each scale. As such, the text clearly guides readers on how to choose and use the instruments available. Extensive cross-referenced tables and charts closely integratethe parts of the book to facilitate readers in moving from one symptom domain to another.