The burgeoning of research on signed language during the last two decades has had a major influence on several disciplines concerned with mind and language, including linguistics, neuroscience, cognitive psychology, child language acquisition, sociolinguistics, bilingualism, and deaf education. The genealogy of this research can be traced to a remarkable degree to a single pair of scholars, Ursula Bellugi and Edward Klima, who have conducted their research on signed language and educated scores of scholars in the field since the early 1970s.

The Signs of Language Revisited has three major objectives:
* presenting the latest findings and theories of leading scientists in numerous specialties from language acquisition in children to literacy and deaf people;
* taking stock of the distance scholarship has come in a given field, where we are now, and where we should be headed; and
* acknowledging and articulating the intellectual debt of the authors to Bellugi and Klima--in some cases through personal reminiscences.
Thus, this book is also a document in the sociology and history of science.