This comprehensive and balanced collection of papers on learning from input processing will be welcomed by those beginning their study of input processing as well as those who are familiar with the field. The papers included tackle the major issues and do so with clarity and authority. It is especially pleasing to see that vocabulary is now getting the attention it deserves in this crucial area of second language acquisition.Paul Nation, Victoria University of Wellington, New ZealandThis impressive handbook comprehensively brings together key topics in input processing as written by renowned scholars and remarkably establishes connections with related theoretical, empirical, methodological, and pedagogical work. Thus, it offers innovative directions for understanding input processing and second/additional language acquisition more generally.Kara Morgan-Short, University of Illinois Chicago, USAIn this cutting-edge and mesmerizingly insightful handbook, Drs. Wong and Barcroft share the writings of a generation’s worth of wisdom on the brain’s mechanisms in acquiring new languages. This is a volume every applied linguist should read.Paula Winke, Michigan State University, USAThis volume is a testament to the longevity and the intellectual force that is input processing in the field of SLA. Decades in the making, yet current and cutting edge, the text’s contributions and their individual contributors—led by Wynne Wong and Joe Barcroft—have simultaneously consolidated and propelled our understanding of input processing at the nexus of theory, empirical research, and practice.Luke Plonsky, Northern Arizona University