Sharpening The Warrior's Edge is the first text which examines survival and combat performance from a scientific perspective. Author Bruce K. Siddle methodically brings together one hundred years of research which identifies the relationship between survuval stress, the heart rate and combat performance. Beyond mere theory, the test explains ... why combat performance and reaction time deteriorates under the effects of survival stress, why and how perceptual and visual narrowing occurs during combat, an insight into Survival Stress Management techniques designed for combat, how to develop a training methodology which combines educational psychology, neurobiology, principles of learning and motor learning research. Most importantly, Siddle explores the psychological and spiritual components which establish the warrior mindset. This pioneering text is a must read for present -day warriors, or anyone involved in use of force, combat or martial arts training.