"It is no surprise that the Introductory Textbook of Psychiatry, by Black and Andreasen, is now in its fifth edition. This book is beautifully written, well-organized, and easy to use. The authors present essential information in a clear and readable style, making it a valuable and authentic resource for students, trainees, and clinicians. This is one of those books that you want on the shelf within easy arm's reach." John M. Oldham, M.D., Senior Vice President and Chief of Staff, The Menninger Clinic; Professor and Executive Vice Chair, Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine --