The notion of an unconscious mental life has been subject to debate for over a century. Psychodynamic practitioners generally understand clients' consciously experienced symptoms to reflect conflict within an unconscious realm; cognitive psychologists, on the other hand, doubt the validity of this psychodynamic understanding of unconscious processes. This innovative volume attempts to bridge the theoretical gulf between the two approaches by providing objective evidence for unconscious conflict in psychopathology. Integrating psychodynamic, cognitive, and neurophysiological methods, the authors have developed an experimental model using brain wave measurements that can differentiate types of unconscious processes. Meticulously researched and clearly written, the volume provides a unique synthesis of clinical and experimental findings and blazes a new pathway for the study of brain-mind interaction. Following an introduction that outlines the organization of the volume, the authors review the theoretical contexts of psychoanalysis, cognitive psychology, and psychophysiology. The research protocols are then elaborated in sections written both for specialists and for newcomers to each discipline. Chapters describe how psychoanalytically guided clinical assessment of patients leads to hypotheses about the unconscious conflict underlying a symptom, such as phobia. These hypotheses are then used to select words that will be presented subliminally, a method currently employed by cognitive psychologists to investigate unconscious aspects of perception. A new form of signal analysis is applied to obtain brain responses to the subliminal stimuli, providing an objective measurement of dynamically unconscious processes. Three detailed case presentations illustrate the methodological material and help bring the findings to life. . Exploring the concept of an unconscious mental life in its full depth, this groundbreaking study sheds new light on the connections between psychological and neurophysiological processes. It will inform a broad interdisciplinary audience including readers in cognitive psychology, psychoanalysis, and neuropsychology.