This module explores how the human mind allows us to understand and produce language so rapidly and effortlessly. Some of the research on English that we touch on in the module is described in this book chapter; but we go beyond English to look at the neuropsychology of bilingualism and sign languages too, using some of my own research on the second language mental lexicon. You’ll also get hands-on experience with psycholinguistic research by helping to conduct a group experiment and analysing the results. For more about the subject, see the chapter I wrote on it in this textbook.