Poverty of the stimulus has been at the heart of ferocious and tear-filled debates at the nexus of psychology, linguistics, and philosophy for decades. This review is intended as a guide for readers without a formal linguistics or philosophy background, focusing on what poverty of the stimulus is and how it's been interpreted, which is…

This paper revisits the longstanding observation that children produce modal verbs (e.g., must, could) with their root meanings (e.g., abilities, obligations) by age 2, typically a year or more earlier than with their epistemic meanings (e.g., inferences). Established explanations for this "Epistemic Gap" argue that epistemic language…

Linguistic alignment--the contingent reuse of our interlocutors' language at all levels of linguistic structure--pervades human dialogue. Here, we design unique measures to capture the degree of linguistic alignment between interlocutors' linguistic representations at three levels of structure: lexical, syntactic, and semantic. We track these…

Teachers and parents intuitively judge the 'level' of the child and the 'level' of the text and try to match them; they know that overestimation or underestimation of either will be met with restlessness or boredom. In this way, they have an empirical understanding of Vygotsky's ZPD--the zone of proximal development he envisioned as measuring the…

Vygotsky measured his 'zone of proximal development' in years. To do this, he needed a scheme of age periods, and a set of tasks that could diagnose the next age period without defining it. In this paper, we compare the age periods in his late lectures with Halliday's categories of logico-semantic expansion as used by three adolescent…

This dissertation focuses on when and how children learn about the meanings of the propositional attitude" verbs know" and "think". "Know" and "think" both express belief. But they differ in their veridicality: "think" is non-veridical and can report a false belief; but "know" can only…

This thesis investigates children's acquisition of exhaustivity across four structures: quantifiers, single questions, multiple questions and clefts. Two languages, English and German, are probed. Exhaustivity needs some sort of plural set to be mentioned without leaving out a member of that set. This dissertation provides experimental data…

This volume deals with various aspects of the relationship between linguistic ability and general cognitive development. It presents original, up-to-date research for child psychologists, linguists, psycholinguists, scholars, teachers, and students interested in this field and interprets the findings in the context of contemporary linguistic…

This paper reports the findings of an investigation into the development of the use and understanding of locative and temporal prepositions in 94 children aged from 18 months to 8 years. The research was carried out as part of the Project "Language Development in Pre-School Children," directed by Gordon Wells, at the University of…

A study examined the existence in elementary school children of (1) sentence constructivity, (2) developmental differences in constructivity, (3) differences in constructivity across performance levels, and (4) differences after a one- or two-day delay. The study was intended as a partial replication of work by C. Z. Blachowicz (1977-78), which…

"How does a child come to be able to relate his own experience to the formal means of communicating about that experience in the language to which he is exposed?" The author maintains that the innate predispositions that underlie the development of the cognitive ability to organize and structure experience also underlie the acquisition of the…