The MacArthur-Bates Communicative Development Inventories (CDIs) are a widely used family of parent-report instruments for easy and inexpensive data-gathering about early language acquisition. CDI data have been used to explore a variety of theoretically important topics, but, with few exceptions, researchers have had to rely on data collected in…

How do infants find the words in the speech stream? Computational models help us understand this feat by revealing the advantages and disadvantages of different strategies that infants might use. Here, we outline a computational model of word segmentation that aims both to incorporate cues proposed by language acquisition researchers and to…

Corpora of child language are essential for research in child language acquisition and psycholinguistics. Linguistic annotation of the corpora provides researchers with better means for exploring the development of grammatical constructions and their usage. We describe a project whose goal is to annotate the English section of the CHILDES database…

There are numerous models of how speech segmentation may proceed in infants acquiring their first language. We present a framework for considering the relative merits and limitations of these various approaches. We then present a model of speech segmentation that aims to reveal important sources of information for speech segmentation, and to…

This article reviews the proliferation of terms that have been coined to denote the language environment of the young child. It is argued that terms are often deployed by researchers without due consideration of their appropriateness for particular empirical studies. It is further suggested that just three of the dozen or more available terms meet…

Schaeffer (1997, 2000) argues that children lack knowledge of specificity because Dutch children omit determiners and fail to scramble pronouns. Avrutin & Brun (2001), however, find that Russian children place arguments correctly according to whether they are specific or non-specific. This paper investigates object agreement and specificity in…

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)

The ISU/ChiLDES bibliographic database, a nonprofit computerized database dedicated to language acquisition, currently consists of nearly 1,900 annotated bibliographic references to journal articles dating back to 1972. (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)

Investigates in an experimental setting the claim that young children have some knowledge of the rules of correspondence between language and reality which are central to propositional logic. (EKN)

Describes the Human Communication Research Centre Dialogue Database. The database consists of over 700 transcribed and coded dialogues from pairs of speakers aged from 7-14. The speakers are recorded over 2 years while tackling cooperative problem-solving tasks, and the same pairs of speakers are recorded over 2 years tackling 10 different…

Describes the formation of the Child Language Data Exchange System (CHILDES), a system formed to foster the sharing of computerized data on language acquisition. Details the governance of the system, the nature of the database, the shape of the coding conventions, and the types of computer programs being developed. (SED)

Type/Token Ratios (TTRs) frequently fail to discriminate between children at widely different stages of language development, and may fall as children get older. Such effects are caused by a negative, though non-linear, relationship between sample size and TTR. Standardization of the number of tokens before computing TTRs is recommended.…