This article follows Johnson and Liddell (2011a, 2011b, 2011c, 2012) and Liddell and Johnson (2019), which introduce the concepts of sequentiality and contrast, a segmental framework consisting of postures and trans-forms, and features describing the configuration of the fingers and of the thumb. This article further develops that theory of…

The visual-manual modality of sign languages renders them a unique test case for language acquisition and processing theories. In this commentary the authors describe evidence from signed languages, and ask whether it is consistent with Ambridge's proposal. The evidence includes recent research on collocations in American Sign Language that reveal…

Replies to issues raised by Bouchard and Dubuisson (B&D) (1995) about American Sign Language (ASL), refuting B&D's assertion that visual-gestural languages are not bound by any universal constraints on word order and reaffirming that ASL is a highly configurational language with a basic underlying syntactic structure as well as an…

This article first introduces some theoretical considerations concerning the emergence and evolution of sign languages from the semiogenetic perspective. It then presents results from a linguistic study of the phenomenon of lexical stabilization in three emerging sign languages used by Brazilian deaf adults who live in a hearing environment…

In examining the issue of why children do so well at language learning despite limited skill and experience, two possible explanations are addressed: one suggests that children learn language well exactly because they are limited, and the other proposes that children are extremely adept at language learning, perhaps more so than adults. Research…

Verbs of motion and location in Irish Sign Language have a characteristic lexicalization pattern, which influences the lexical choices signers make in denoting the motion and location of entities. Perceived characteristics of referents govern the type of verb root selected. Animate and inanimate referents are signified by different types of verb…

Ways in which the lexicon of Irish Sign Language (ISL) has developed, and how it is being continually extended, are examined. Change occurs in several ways. Research to date indicates that there are 59 basic handshapes, from which all vocabulary items are created. Classifiers are used extensively in the nominal and verbal system of ISL, and 15 of…

This text provides future and practicing teachers of deaf children with basic theoretical and research knowledge as well as specific principles and practices for fostering the development of language and reading. In this third edition of "Language Learning Practices with Deaf Children," the authors have added a section on language assessment in…