In spite of the rapid growth that has made affective computing a highly active area of research and practice, no single volume exists that covers recent technological developments and provide the necessary background on relevant empirical research and theoretical foundations from psychology and neuroscience. Filling this need, this book is designed to be a textbook for advanced undergraduate and graduate courses and an introductory practitioner guide for newcomers to the field. Its' depth of coverage makes it suitable as reference for researchers and practitioners in the different subfields of affective computing.