The Routledge Handbook of Theoretical and Experimental Sign Language Research bridgesthe divide between theoretical and experimental approaches to provide an up-to-date survey of key topics in sign language research. With 29 chapters written by leading and emerging scholars from around the world, this Handbook covers the following key areas: On the theoretical side, all crucial aspects of sign language grammar studied within formal frameworks such as Generative Grammar; On the experimental side, theoretical accounts are supplemented by experimental evidence gained in psycho- and neurolinguistic studies; On the descriptive side, the main phenomena addressed in the reviewed scholarship are summarized in a way that isaccessible to readers without previous knowledge of sign languages. Each chapter features an introduction, an overview of existing research and a critical assessment of hypotheses and findings. The Routledge Handbook of Theoretical and Experimental Sign Language Research is key reading for all advanced students and researchers working at the intersection of sign language research, linguistics, psycholinguistics and neurolinguistics.