When retrieving a quote from memory, evaluating a testimony’s truthfulness, or deciding which products to buy, people experience immediate feelings of ease or difficulty, of fluency or disfluency. Such "experiences of thinking" occur with every cognitive process, including perceiving, processing, storing, and retrieving information, and they have been the defining element of a vibrant field of scientific inquiry during the last four decades. This book brings together the latest research on how such experiences of thinking influence cognition and behavior. The chapters present recent theoretical developments and describe the effects of these influences, as well as the practical implications of this research. The book includes contributions from the leading scholars in the field and provides a comprehensive survey of this expanding area. This integrative overview will be invaluable to researchers, teachers, students, and professionals in the field of social and cognitive psychology.