This study extended an existing crosslinguistic model of verb-marking errors in children's early multiword speech (MOSAIC) by adding a novel mechanism that defaults to the most frequent form of the verb where this accounts for a high proportion of forms in the input. Our simulations showed that the resulting model not only provides a better…

Children's understanding of passives of certain mental state predicates appears to lag behind passives of so-called actional predicates, an asymmetry that has posed a major empirical challenge for theories of passive acquisition. This paper argues against the dominant view in the literature that treats the predicate-based asymmetry as…

The main goal of this tutorial is to promote the study of children with developmental language disorder (DLD) across different languages of the world. The cumulative effect of these efforts is likely to be a set of more compelling and comprehensive theories of language learning difficulties and, possibly, of language acquisition in general.…

The present study aimed to catalogue and compare usage patterns of verb-particle constructions (VPCs) in Modern Standard Arabic and English by native and learner writers. Building upon an analysis of a multi-genre monolingual Arabic corpus, use of both Arabic and English VPCs was explored in a bilingual L1 (first language) Arabic L2 (second…

This study analyzed the grammatical control of verbs exercised by 145 monolingual English and Generation 1.5 bilingual developmental writers in narrative essays using quantitative and qualitative methods. Generation 1.5 students made more errors than their monolingual peers in each category investigated, albeit in only 2 categories was the…

This article studies the use of support verb constructions (SVCs) in the written production of learners of Spanish. SVCs are lexical combinations whose content is similar to verbal predicates but is distributed between a verb and a noun, the noun being the carrier of the core lexical meaning of the predicate. Although there is considerable…

The lexical mapping of abstract functional words like modal verbs is an open problem in acquisition (e.g., Gleitman et al. 2005). In diachronic linguistics it has been proposed that learner mapping errors are responsible for innovations in the historical record (see Kiparsky 1974; Roberts & Roussou 2003, among others). This suggests that child…

Construction grammar (CG) has been proposed as an adequate grammatical formalism for building intelligent language tutoring systems because it is highly compatible with the learning strategies observed in second language learning. Unfortunately, the lack of computational CG implementations has made it impossible in the past to corroborate these…

This paper examines two issues concerning nonagreeing "don't" in child English, e.g., "He don't fit". (1) Do children know that "don't" consists of auxiliary "do" plus sentential negation, or do they misanalyze it simply as negation? I argue that the former claim yields both empirical (distributional) and conceptual advantages, while the latter…

We report the case of an English-speaking aphasic patient (JP) with left posterior-frontal damage affecting the inferior frontal and precentral gyri. In speaking, JP was impaired with the regular inflections of nouns and pseudonouns, making errors like "pears" instead of "pear" or "door" for "doors", while the spoken production of noun stems and…

The goal of this dissertation is to address several major empirical and theoretical issues related to English-speaking children's difficulties with auxiliary use and inversion in questions. The empirical data on English question acquisition are inconsistent due to differences in methods and techniques used. A range of proposals about the source of…

This study is an investigation of the acquisition of existential constructions (ECs) in English and in Spoken Arabic. It is the first of its kind in that it examines the acquisition of the pieces and the features that form ECs; namely, existential "there," the copula, definiteness, and agreement for English and existential "fii," definiteness,…

Patients with psychiatric disorders such as schizophrenia commonly present with impaired language. Here we investigate language in schizophrenia with a focus on inflectional morphology, using an intensively studied and relatively well-understood linguistic paradigm. Patients with schizophrenia (n = 43) and age-matched healthy control subjects (n =…

In this study, we use corpus analysis and computational modelling techniques to compare two recent accounts of the OI stage: Legate & Yang's (2007) Variational Learning Model and Freudenthal, Pine & Gobet's (2006) Model of Syntax Acquisition in Children. We first assess the extent to which each of these accounts can explain the level of OI errors…

The 1990s witnessed a major expansion in research on children's morphosyntactic development, due largely to the availability of computer-searchable corpora of spontaneous speech in the CHILDES database. This led to a rapid emergence of parallel findings in different languages, with much attention devoted to the widely attested difficulties in…