All accounts of language acquisition agree that, by around age 4, children's knowledge of grammatical constructions is abstract, rather than tied solely to individual lexical items. The aim of the present research was to investigate, focusing on the passive, whether children's and adults' performance is additionally semantically constrained,…

Previous work has reported that children creatively make syntactic errors that are ungrammatical in their target language, but are grammatical in another language. One of the most well-known examples is "medial wh-question" errors in English-speaking children's wh-questions (e.g., "What do you think who the cat chased?" from…

Previous research on young children's knowledge of prosodic focus marking has revealed an apparent paradox, with comprehension appearing to lag behind production. Comprehension of prosodic focus is difficult to study experimentally due to its subtle and ambiguous contribution to pragmatic meaning. We designed a novel comprehension task, which…

Children show a remarkable degree of consistency in learning some words earlier than others. What patterns of word usage predict variations among words in age of acquisition? We use distributional analysis of a naturalistic corpus of child-directed speech to create quantitative features representing natural variability in word contexts. We…

Variability in children's language acquisition is likely due to a number of cognitive and social variables. The current study investigated whether individual differences in statistical learning (SL), which has been implicated in language acquisition, independently predicted 6- to 8-year-old's comprehension of syntax. Sixty-eight (N = 68)…

Background: Morphosyntax has been well researched in specific language impairment (SLI) and there is general agreement that children with SLI have particular difficulties with tense-marking. Less well researched is the role that aspect plays in the difficulties found in tense-marking, especially as tense and aspect are often confounded in English.…

Native speakers of English are sensitive to the likelihood that a verb will appear in a specific subcategorization frame, known as "verb bias." Readers rely on verb bias to help them resolve temporary ambiguity in sentence comprehension. We investigate whether deaf sign-print bilinguals who have acquired English syntactic knowledge…

This dissertation investigates the acquisition of subject-to-subject raising (StSR) in English. The goal is twofold: to determine whether StSR predicates that permit experiencers (1) are delayed relative to those which do not (2), and to link the acquisition of StSR to that of other A-movement structures. (1) William seems (to Leonard) to be…

Children use syntax to interpret sentences and learn verbs; this is syntactic bootstrapping. The structure-mapping account of early syntactic bootstrapping proposes that a partial representation of sentence structure, the "set of nouns" occurring with the verb, guides initial interpretation and provides an abstract format for new learning. This…

This dissertation contains three studies that investigate whether attested patterns of constituent order distribution and change in the world's languages can be attributed, in part, to cognitive preferences for some constituent orders over others. To assess these preferences, seven experiments employed an "elicited pantomime" task.…

We report a replication and extension of Ferreira (2003), in which it was observed that native adult English speakers misinterpret passive sentences that relate implausible but not impossible semantic relationships (e.g., "The angler was caught by the fish") significantly more often than they do plausible passives or plausible or implausible…

Previous studies have shown a correlation between working memory (WM) and syntactic complexity (variously defined) in language comprehension. The present study investigates this relationship in spontaneous language production, proposing a novel metric, informed by language development and disorders, where complexity is construed in terms of those…

Research on language comprehension has focused on the resolution of syntactic ambiguities, and most studies have employed garden-path sentences to determine the system's preferences and to assess its use of nonsyntactic sources information. A topic that has been neglected is how syntactically challenging but essentially unambiguous sentences are…

Investigation supported by a grant from the U.S. Office of Education. (VM)

A total of 79 profoundly deaf 8- to 12-year-old children were tested for comprehension of spoken, written, and signed (Paget-Gorman Sign System, PGSS) English grammatical contrasts. It is concluded that the PGSS provides a communication channel that does not hinder language acquisition, but does not overcome the grammatical problems of deaf…