In this paper the order in which wh-questions are acquired in the production and comprehension of two Korean children, aged 1;8–2;8 and 1;10–2; 10, is analysed and compared with the available crosslinguistic data. Consistencies in acquisition order are hypothesized to be based on universals of cognitive development, which constrain the comprehension and production of wh-forms and influence the order in which mothers introduce them, and on functionally based similarities in the input of form/function pairs across children and languages. Discrepancies in acquisition order are attributed to differences in interactive style across caregivers and children, leading to different input frequencies of particular forms and individual children's selection of different forms for use.

This study investigated the relationship between control and coreference using an act-out task involving 81 children ranging in age from 3;1 to 8;0 and eight adults ranging in age from 30 to 55. The results replicated previous findings in revealing five developmental stages in children's interpretation of PRO, an empty pronominal element. A significant relationship was observed in the patterns of children's interpretation of forwards sentences containing PRO and those containing overt pronouns. However, there was no relationship in the development of restrictions on control and restrictions on coreference.

This study was designed to follow up children's early spontaneous uses of from to mark oblique agents by giving 40 children (aged 2; 5–6; 1), and 10 adults, grammatical and ungrammatical sentences containing from, with, and by to imitate and to repair. As predicted, children's imitations and repairs showed that (a) 2–year-olds produce from for agents, and with for instruments in imitation; and (b) as children get older, they shift to by for agents in their repairs, and keep from to mark locative sources. These findings support the hypothesis that when children first try to express oblique agents, before acquisition of conventional by, they choose from for this purpose because agents, as instigators of actions, are conceived of as the source of the action and its result.

Children aged 2;0 to 2;6 participated in a longitudinal study examining their acquisition of the English auxiliary system following a six-week period in which they were exposed to additional auxiliary input in varying sentence contexts. Groups of children received enrichment utterances with the auxiliary could either in first position in the sentence, in middle position, or in both positions. Children in the front position group were significantly advanced over the other experimental groups in acquiring modal auxiliaries but not non-modals. However, none of the experimental groups differed significantly from a baseline group which received no additional could input. The implications of these findings for understanding the mechanisms of auxiliary acquisition and the nature of children's grammatical categories are discussed.

A boy's acquisition of Pig Latin was monitored throughout the year preceding first grade. Abilities underlying this game include the identification of words, deletion of the first syllabic onset (i.e. prevocalic consonants) of each word, blending of this onset and the suffix [e1] onto the word's end, and short-term memory for speech units. Performance improved over time as the underlying abilities developed. Meanwhile, various informative errors were made. Throughout most of the study, onsets that were correctly removed from a word's beginning were often added to its end incorrectly; unstressed function words were repeated intact and not transformed; and the first syllabic onset was overlooked when the syllable was unstressed. Because speech games like this one depend upon basic language skills, they can clarify aspects of ordinary language development.

The present study analysed formerly unexamined indirect routes for relationships between time 1 maternal speech and later child language development. Ten normally developing children in Brown's early stage 1 and their mothers were the subjects. For each dyad, two free-play sessions occurring five months apart were videotaped in the subjects' homes. Mothers' pragmatic language use was coded from time 1 sessions. Child language level was coded at both sessions. Even though time 1 scores of the outcome were controlled, seven of the ten relationships involving mother speech and child language development were indirectly related through one of two time 1 child language measures. The results indicate that a mother-driven, direct influence model may be inappropriate for many mother speech–child language development relationships. We argue that child-driven and mother-driven explanatory models for the indirect relationships are equally feasible.

We report an experiment designed to identify how contextual information can influence children's performance on an experimental task involving temporal terms. Grain (1982) reported improved performance on a comprehension task when subjects were provided with contextual information, and he suggested that the improvement was due to satisfaction of presuppositions. However, this contextual information might have served to simplify task demands by providing prior information concerning an important aspect of the task. The present study distinguishes these factors by incorporating contextual information into the subordinate clause of the test sentences in a comprehension experiment (to satisfy presupposions) or into the main clause (to provide comparable prior information without satisfying presuppositions). We conclude that contextual information results in a significant improvement only when such information can be used to satisfy presuppositions.

Some studies have shown that children tend to interpret figurative language literally. Our hypothesis is that they can reach an idiomatic competence if idioms are presented within a rich informational environment allowing children to grasp their figurative sense. First and third graders were presented with narratives biased both to the figurative meaning of idioms (experiment 1) and to the literal meaning (experiment 2) and then given a comprehension task. Experiment 3 was designed to investigate children's production of idioms as compared to the comprehension abilities explored in experiments 1 and 2. Results show that informative contexts can improve children's ability to perceive idiomatic meanings even at the age of seven; and that children are less able to produce idioms than to comprehend them. Generally results emphasize that children seem able to perceive that language can be both figurative and literal.

It is commonly thought that children learning two languages simultaneously during infancy go through a stage when they cannot differentiate their two languages. Virtually all studies of infant bilingual development have found that bilingual children mix elements from their two languages. These results have been interpreted as evidence for a unitary, undifferentiated language system (the unitary language system hypothesis). The empirical basis for these claims is re-examined and it is argued that, contrary to most extant interpretations, bilingual children develop differentiated language systems from the beginning and are able to use their developing languages in contextually sensitive ways. A call for more serious attention to the possible role of parental input in the form of mixed utterances is made.

The distinctions between the mental terms, know, think and sure was examined in an experiment with 60 children between three and six years of age. The children were required to find an object hidden in one of two places. Their only clues were two statements involving contrasting mental terms, with each statement referring to one of the possible hiding places. Results showed a significant improvement with age for the know-think and sure-think contrasts, with think treated as a less reliable index of location than both know and sure by four to five years of age. No change with age was found for know-sure contrast. It is concluded that by four to five years of age, children recognize the function of mental terms to express degrees of certainty, and that this understanding is probably not based on the factive properties of the terms.

Nursery rhymes are an almost universal part of young English-speaking children's lives. We have already established that there are strong links between children's early knowledge of nursery rhymes at 3;3 and their developing phonological skills over the next year and a quarter. Since such skills are known to be related to children's success in learning to read, this result suggests the hypothesis that acquaintance with nursery rhymes might also affect children's reading. We now report longitudinal data from a group of 64 children from the age of 3;4 to 6;3 which support this hypothesis. There is a strong relation between early knowledge of nursery rhymes and success in reading and spelling over the next three years even after differences in social background, I.Q and the children's phonological skills at the start of the project are taken into account. This raises the question of how nursery rhymes have such an effect. Our answer is that knowledge of nursery rhymes enhances children's phonological sensitivity which in turn helps them to learn to read. This paper presents further analyses which support the idea of this path from nursery rhymes to reading. Nursery rhymes are related to the child's subsequent sensitivity to rhyme and phonemes. Moreover the connection between knowledge of nursery rhymes and reading and spelling ability disappears when controls are made for differences in these subsequent phonological skills.

This study examines how children understand the argumentative function of the French connective même (‘even’). Two completion tasks, related to the argumentative properties of the morpheme, were used: (1) to infer the conclusion of an ‘even’ sentence, and (2) to infer the argument position. Two main factors likely to influence the comprehension were investigated: the semantic context, and the syntactic form – affirmative vs negative. The argumentative function of même was globally mastered at the age of eight, but comprehension depends on semantic context. Performances were better for negative sentences, which suggests that negation plays a facilitating role; the specific properties of the negative expression pas même/même pas (‘not even’) in discourse are discussed.

Attempts were made to elicit poems from 133 children between the ages of 2 and 6. Seventy-eight of the children produced 606 poems between them. Sixty per cent of the poems contained phonological devices; 42% contained rhyme and 26% contained alliteration. There was no obvious age trend as regards the use of rhyme but the frequency of alliteration declined with age. There were no significant age differences as regards the relative frequency with which different phonemes were manipulated in rhyme and alliteration. The possible functions of such sound-based language play in language development are discussed, with special reference both to children's sound play in crib speech, and to the development of phonological awareness and its importance in learning to read.

The procedure used by Pratt, Tunmer & Bowey (1984) was employed in this study to investigate young children's abilities to correct over-regularized plural nouns and verbs in the past tense. Older children (mean age 6; 4) performed better than younger children (mean age 4; 11) and plural nouns were corrected significantly more than past-tense verb forms. As predicted, the younger children were better at correcting the nouns than the verbs; the two grammatical forms were corrected equally well by the older children.

Elsewhere we have argued on the basis of cross linguistic studies of directionality effects on anaphora in child language, that there is no universal ‘forward directionality preference (FDP)’; rather such a preference is linked to languages with specific grammatical properties. Although such a preference has been attested in English acquisition, matched experimental designs in Japanese, Chinese and Sinhalese, for example, do not show this effect. In this paper we argue that current attempts to show that forward directionality effects can also be induced in Japanese acquisition do not succeed in supporting the FDP. Specifics of the design of stimulus sentences in these experiments vary previous cross-linguistic designs so as to favour forward directionality on independent grounds, and confound cross linguistic comparisons. They in fact support a universal structure dependence in children's hypotheses about directionality of anaphora’.

A developmental perspective in child language research begins with a focus on the child and the processes that contribute to change in the child's knowledge of language. Developmental change occurs in an organized, systematic way, with later changes influenced at least in part by developments at an earlier time. The acquisition of tense and aspect provides a relevant example. Data previously published by Weist, Wysocka, Witkowska-Stadnik, Buczowska & Konieczna (1984) are reanalysed here to show, statistically, that children learning Polish are influenced by aspect in aquiring verb tense, just as children are in learning English, Italian, Hebrew, Turkish and other languages. Children beginning to learn verb inflections find aspectual contour particularly compelling in leading them to learn tense distinctions.

This article challenges the position of Clark (1988) with regard to Contrast. The evidence cited in support of this theory from adult languages is far from clear, and the evidence coming from child language admits of alternative explanations. In addition, the ‘logic’ of assuming Contrast leads to insurmountable difficulties in the acquisition of irregular forms and allomorphs. An alternative to Contrast is proposed. This draws on the drive towards the adult system, the development of non-linguistic concepts, the acquisition of language in context, and the use of the Co-operative Principle by participants in conversational exchanges to account for those features of language and language acquisition that Contrast was designed to explain.