This Field Guide contains four main sections. The first, The Basic Techniques of Biopsychosocial and Evidence-Based Assessment, is a relatively short section containing 16 panels or boxes, each containing structures and strategies for interviewing and data collection. Some of the anecdotes are fascinating. It ends with the old adage, "When you hear hoof beats, it’s probably horses, not zebras." How often have we used the same saying in hospital rounds? Section 2, Symptom-Based Assessment of Common Clinical Complaints, is, to me, the best section in the book. It contains 18 modules, each organized around a common presenting complaint such as depression or anxiety or around a specific clinical need such as a competency evaluation. The modules also contain several summary panels that tabulate frequently used clinical information and mnemonics for the memory-challenged student or older clinician.