The concept of an output-driven map formally characterizes an intuitive notion about phonology: that disparities between the input and the output are introduced only to the extent necessary to satisfy restrictions on outputs. When all of the grammars definable in a phonological system are output-driven, the implied structure provides significant…

Age of acquisition (AoA) refers to the age at which people learn a particular item and the AoA effect refers to the phenomenon that early-acquired items are processed more quickly and accurately than those acquired later. Over several decades, the AoA effect has been investigated using neuroscientific, behavioral, corpus and computational…

To test between two recent accounts of the early stages in the acquisition of negation, we conducted an elicited production study with 25 children, between 2;05 and 3;04 (mean 2;11). The experimental study produced a robust set of negative sentences, with considerable individual variation. Although 13 of the child participants mainly produced…

When learning verb meanings, learners capitalize on universal linguistic correspondences between syntactic and semantic structure. For instance, upon hearing the transitive sentence "the boy is glorping the girl," 2-year-olds prefer a two-participant event (e.g., a boy making a girl spin) over two simultaneous one-participant events (a…

Each of us as language learners had different language experiences, yet somehow we have converged upon broadly the same language system. From diverse, often noisy samples, we have attained similar linguistic competence. How so? What mechanisms channel language acquisition? Could our linguistic commonalities possibly have converged from our shared…

In this article, we hypothesize that "invariance detection," a general perceptual phenomenon whereby organisms attend to relatively stable patterns or regularities, is an important means by which infants tune in to various aspects of spoken language. In so doing, we synthesize a substantial body of research on detection of regularities across the…

Developmental dyslexia is believed to involve a phonological deficit of which the exact properties have not been clearly established. This article presents the findings of a longitudinal case study that suggest that, at least for some people with dyslexia, the fundamental problem involves a disturbance of temporal-spatial ordering abilities. A…

Presents the case for a mapping theory of developmental language impairment, which branches into a theory that specific language impairment arises from impaired phonological processing and the consequent disruption of the mapping process through which the words and sentence structure of language are established. (Author/VWL)

A discussion of English native-language vocabulary acquisition in children takes a closer look at the assumption that vocabulary is learned by common association of word with event, focusing on the acquisition of verb meanings. The intuitive power of the view that words are learned by noticing real-world contingencies for their use is…

While children aged 1;10 and 2;1 show only a modest rate of mapping novel nouns onto unfamiliar rather than familiar objects, children aged 1;4 and 1;8 show a high rate. Two studies with young 2-year olds found the noun-mapping preference prevalent, but unless initial choices are strongly reinforced, increase in salience of familiar kinds lures…

Investigated adult and three- and five-year-old children's use of verb inflections to guide their initial mapping of verb meanings in two studies that explored use of the -ing and -ed verb inflections during mapping of novel verb meanings. Results are applied to implications for early verb learning and the use of the bootstrapping construct in…

An analysis of language acquisition in English and Dutch focuses on a theory of phrase structure. It is argued that the previously posited phrase structure operations of projection and adjunction can be dispensed with in favor of the single operation of "merge." One version of merge is shown to account for a range of data from child English and…

A study investigated children's difficulty in learning color words and attempted to determine whether the difficulty was perceptual, conceptual, or linguistic. The subjects were 24 two-year-olds, half with knowledge of color words and half without, and a similar control group. The experimental subjects were given conceptual and comprehension tasks…