In this article, we provide an overview of the last twenty years of research on Indigenous sign languages, deaf community sign languages, co-speech gesture, and multimodal communication in the Australian context. From a global perspective, research on sign languages and on the gestures that normally accompany speech has been used as the basis for…

A comprehensive theory of child language acquisition requires an evidential base that is representative of the typological diversity present in the world's 7000 or so languages. However, languages are dying at an alarming rate, and the next 50 years represents the last chance we have to document acquisition in many of them. Here, we take stock of…

Language exerts a powerful influence on our concepts. We review evidence documenting the developmental origins of a precocious link between language and object categories in very young infants. This collection of studies documents a cascading process in which early links between language and cognition provide the foundation for later, more precise…

I review the classic literature in generative grammar and Marr's three-level program for cognitive science to defend the Evaluation Metric as a psychological theory of language learning. Focusing on well-established facts of language variation, change, and use, I argue that optimal statistical principles embodied in Bayesian inference models are…

Traditionally, acquisition of syntactic knowledge and the development of sentence comprehension behaviors have been treated as separate disciplines. This article reviews a growing body of work on the development of incremental sentence comprehension mechanisms and discusses how a better understanding of the developing parser can shed light on two…

This review explores challenges and barriers to parent-child interaction which leads to language development in the first 3 years of the child's life. Seven databases yielded 1,750 hits, reduced to 49 evidence-based studies, many of which still had methodological imperfections. Evidence was quite strong in relation to socio-economic status,…

Argues against Youssef's treatise which pointed out some difficulties in attempting to test Bickerton's language bioprogram hypothesis (LBH), contending that the treatise seriously misunderstood certain key concepts of the LBH and dismissed with questionable reasoning some important findings which supported the state/process distinction as a…

A discussion of the role of linguistic theory in explaining language acquisition proposes that theory draws too narrow a picture of language to adequately account for the developmental phenomena of acquisition. While recognizing the importance of descriptive linguistic research, a new approach cautions against embracing description to the…

Describes the CHILDES/BIB electronic bibliographic database, its contents, and its relationship to the CHILDES database. CHILDES is a depository of child language corpora and is the publisher of CHAT (a transcription manual) and CLAN (an electronic package for child language research). (GLR)

Presents four principles for archive-based language research: maximum readability and minimum bias; consistent encoding for exhaustive computer search; systematic contrastiveness; and data comparability in elicitation, transcription and coding. Examples from existing computer archives illustrate these and other principles, and strategies are…

An overview of the babbling stage in child language acquisition, which occurs normally at age six months to one year, looks at research on this period. The babbling stage is preceded by arbitrary infant vocalization and is succeeded by production of simple but recognizable words. Babbling represents a period of increasing pattern and articulatory…

A survey of the literature on children's language and reading, divided into three major areas: the child, the instructional materials, and the teacher. (DD)

Presents a study of young children's understanding that pronouns and proper names cannot be modified by pronominal adjectives. Some nonsyntactic theories are discussed that support the claim that children understand knowledge of word order through the rules that order abstract linguistic categories. (31 references) (GLR)

Demonstrates the important need for language researchers to fill in the considerable theory data gap regarding the primary acquisition of Spanish by pointing out that theory development could be distorted if cross-linguistic comparisons of acquisition evidence draw on a faulty, incomplete data base. (CB)

Examines the Child Language Data Exchange System (CHILDES), its organizational form, and its three major tools: (1) the CHILDES database of transcripts, (2) the CHAT system for transcribing and coding data, and (3) the CLAN programs for analyzing CHAT files. (GLR)