This is the first book to examine in-depth the crucial role of the speed of information processing in the brain in determining reading fluency in both normal and dyslexic readers. Part I explains fluency in reading from both traditional and modern perspectives. Fluency has historically been viewed as the outcome of other reading-related factors and has often been seen as a convenient measure of reading skills. This book, however, argues that fluency has a strong impact on other aspects of reading and plays a central role in the entire reading process. Part II deals with the determinants of reading fluency. Chief among these is the speed of information processing in the brain. Using both behavioral and electrophysiological evidence, the book systematically examines the features of processing speed in the various brain systems involved in reading: visual-orthographic, auditory-phonological, and semantic and shows how speed of processing affects fluency in reading. Part III deals with the complex issues of cross-modal integration and specifically with the need for effective synchronization of the brain processes involved in reading. It puts forward the Synchronization Hypothesis and discusses the role of the Asynchrony Phenomenon as a major factor in dyslexia. Finally, it summarizes research on manipulating reading rate by means of the Acceleration method, providing evidence for a possible intervention aimed at reducing Asynchrony. Key features of this outstanding new book include: *Expanded View of Fluency. Reading fluency is seen as both a dependent and an independent Variable. Currently available books focus on reading rate solely as the outcome of other factors whereas this volume stresses that it is both an outcome and a cause. *Information Processing Focus. Fluency itself is determined to a large extent by a more general factor, namely, speed of processing in the brain. The book presents wide-ranging evidence for individual differences in speed of processing across many subpopulations. *Brain Synchronization Focus. The book posits a new theory arguing that effective reading requires synchronization of the different brain systems: visual orthographic, auditory-phonological, and semantic. *Research-Based Interventions. Interventions to enhance fluency and, thereby, reading skills in general are presented in detail. *Author Expertise. Zvia Breznitz is Head of the Department of Learning Disabilities and Director of the Laboratory for Neurocognitive Research at Haifa University in Israel, where she has been researching this topic for over a decade. This book is appropriate for researchers and advanced students in reading, dyslexia, learning disabilities, cognitive psychology, and neuropsychology.