This Handbook is a comprehensive overview of the multidisciplinary field of discourse processes. The editors hope to foster a more interdisciplinary approach to discourse processing with this Handbook, while simultaneously developing an appreciation within the field for multiple methods of establishing rigorous scientific claims. The field of discourse processes is currently fueled by seven dominant approaches: * discourse psychology; * corpus analysis; * computational discourse; * discourse technologies; * conversation analysis; * hybrid qualitative and quantitative approaches; and * cultural foundations. The contributors also discuss future trends in research, including corpus analyses, the integration of neuroscience with discourse research, and the development of more advanced computer technologies for analyzing discourse.