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Biomedical subjects

M L Rice

Publications and source records attributed to M L Rice.

At least 19 recordsLinked to original sources
PubMed2000

The use of syntactic cues in lexical acquisition by children with SLI. Specific Language Impairment.

This study investigated the syntactic bootstrapping abilities of children who differed by language abilities and age. In the first study, the performance of 5-year-old children with Specific Language Impairment (SLI) was compared to that of two groups of typically developing children-one of equivalent language levels, as indexed by mean length of utterance (MLU), and the other of equivalent chronological age. In the second study, two groups of 7-year-old children, one whose language was developing typically and one with SLI, were involved. The count/mass distinction was used as the basis for the experimental tasks. A videotaped story was used to present the novel count and mass words, with syntactic cues in one condition and with neutral syntax in another. Results from the first study revealed that only the 5-year-old nonaffected control children showed evidence of using the syntactic cues. The 5-year-old SLI group and 3-year-old control group achieved comparable scores. However, error analyses suggested that different factors were operative in the two groups. The second study revealed that there was continued growth into the early school years for children with SLI and children whose language was developing typically.

Child↗
PubMed2000

Acquisition of irregular past tense by children with specific language impairment.

In this paper we add to what is known about the tense-marking limitations of children with specific language impairment (SLI) by exploring the acquisition of regular and irregular past tense, encompassing the age range of 2;6 to 8;9 (years;months) and comparing the performance of 21 children with SLI to that of 23 control children of the same age and 20 younger control children of equivalent mean length of utterance (MLU) at the outset. The analysis differentiated between the morphophonological component of past tense marking and the morphosyntactic component (finiteness). In the morphosyntactic component, the performance of the SLI group trails that of the two control groups over 3.5 years, whereas in the morphophonological component, the SLI group's performance is equivalent to that of the younger controls. Models of growth curves for regular past tense and irregular finiteness marking show the same pattern, with linear and quadratic components and the child's MLU at the outset as the only predictor. For morphophonological growth the picture changes, with an interaction of linear trend and MLU and the child's receptive vocabulary emerging as a predictor. The findings support a morphosyntactic model, such as the extended optional infinitive (EOI) model, with regard to the limitations in finiteness marking and for affected children.

Child↗
PubMed1999

Grammaticality judgements of an extended optional infinitive grammar: evidence from English-speaking children with specific language impairment.

This study reports on the outcomes of an investigation designed to evaluate competing accounts of the nature of the grammatical limitations of children with specific language impairment (SLI) with a new comprehension measure involving well-formedness judgments. It is a follow-up to the longitudinal study of Rice, Wexler, and Hershberger (1998), which reported on the production of grammatical morphemes by young children with SLI and 2 control groups of children, one at equivalent levels of mean length of utterance at the outset of the study, the other of equivalent age. In this investigation, we report on grammaticality judgment measures collected from the same 3 groups of children over a period of 2 years for 5 times of measurement. It is the first longitudinal study of grammaticality judgments of children with SLI. The findings show that children's grammatical judgments parallel their productions: Children with SLI can make fine-tuned grammatical judgments to reject morphosyntactic errors they are unlikely to commit, whereas they accept morphosyntactic errors that they are likely to produce. The findings support the extended optional infinitive (EOI) account of morphosyntactic limitation based in underlying grammatical representations and do not support accounts of input processing deficits or production constraints.

Child↗
PubMed1998

Family histories of children with SLI who show extended optional infinitives.

Previous family history studies have demonstrated that there are elevated rates of language and language-related impairments in families identified through probands with language impairments. This study examines family histories of children with specific language impairment (SLI) known to have particular grammatical limitations in a core feature of grammatical acquisition, a stage known as Extended Optional Infinitives (EOI). Family affectedness rates are reported for 31 families identified through preschool probands with this clearly defined language impairment and 67 control families, identified through nonaffected preschool children developmentally similar to the probands. It was found that significantly more speech and language difficulties, as well as language-related difficulties, such as reading, were reported for proband families than control families. The elevated rates were obtained for nuclear family members and extended family members as well. Fathers of probands were more often reported as having difficulties (29% for speech/language impairments) than were mothers of probands (7%), but there was no difference between brothers (26%) and sisters (29%). No differences were evident between proband families based on proband gender. The findings are relevant for theoretical models of sources of unexplained variations in grammatical competence in young children. In addition, the findings contribute new information about expected rates of affectedness, means of identification of affected family members, and comorbidity of symptomatology.

Child, Preschool↗
PubMed1998

The socioemotional behaviors of children with SLI: Social Adaptation or Social Deviance?

Two models of the relationship between socioemotional behavior and verbal abilities are compared: Social Adaptation and Social Deviance. The socioemotional integrity of 17 children with specific language impairment (SLI) and 20 unaffected children who were age-matched (AM) was examined using the Child Behavior Checklist (CBCL) and the Teacher's Report Form (TRF) at kindergarten and first grade. All CBCL and TRF syndrome scale means for both groups were within normal limits. Significant group x respondent interaction effects were observed; teachers, and not parents, rated the children with SLI as having more social and internalizing behavioral problems than their AM peers. Significant differences between groups were restricted to internalizing, social, and attention problems. Very little congruence or stability over time was observed in the clinical ratings. The outcomes support a Social Adaptation Model of socioemotional behavior and language impairment. Implications for the clinical management of children with SLI are discussed.

Adaptation, Psychological↗
PubMed1998

Tense over time: the longitudinal course of tense acquisition in children with specific language impairment.

Tense marking in English is relatively late appearing and is especially late for children with Specific Language Impairment (SLI). Little is known about the full course of acquisition for this set of morphemes. Because tense marking is a fundamental property of clause construction, it is central to current theories of morphosyntax and language acquisition. A longitudinal study is reported that encompasses the years of 2;6-8;9 years for typically developing children (N = 43) and 4;6-8;8 years for children with SLI (N = 21). The findings show that a diverse set of morphemes share the property of tense marking; that this set is not mastered until age 4 years in typically developing children and after 7 years for children with SLI; that acquisition shows linear and nonlinear components for both groups, in a typical S-shaped curve; and that nonsyntactic measures are not predictors of growth (including nonverbal intelligence, vocabulary size, and mother's education), whereas initial MLU does predict rate of acquisition. The findings are consistent with a model of Optional Infinitives (OI) for typically developing children (cf. Wexler, 1994, 1996) and Extended Optional Infinitives (EOI) for children with SLI. This model hypothesizes incomplete specification of features of tense that are represented in the grammar.

Child↗
PubMed1997

An examination of the morpheme BE in children with specific language impairment: the role of contractibility and grammatical form class.

This study examined the production of the morpheme BE, focusing on the influence of contractibility, the relationship between copula and auxiliary forms, and the occurrence of non-omission errors. Language samples collected from children with SU and from normal language learners at equivalent MLU levels were analyzed. Three levels of contractibility were examined: contractible, syntactically uncontractible, and phonetically uncontractible. Contractible contexts were produced significantly more accurately than uncontractible contexts by both groups. There was no difference between the two forms of uncontractibility. Furthermore, there were no significant interactions between language status and contractibility, suggesting that contractibility influenced both groups equally. Copula forms were produced more consistently than auxiliary. There was no interaction between BE type and language status. The groups did not differ in proportion or type of non-omission error. The results are discussed in relation to accounts of morphological deficits in SU.

Child↗
PubMed1996

Toward tense as a clinical marker of specific language impairment in English-speaking children.

A critical clinical issue is the identification of a clinical marker, a linguistic form or principle that can be shown to be characteristic of children with Specific Language Impairment (SLI). In this paper we evaluate, as candidate clinical markers, a set of morphemes that mark Tense. In English, this includes -s third person singular, -ed regular past, BE, and DO. According to the Extended Optional Infinitive Account (EOI) of Rice, Wexler, and Cleave (1995), this set of morphemes is likely to appear optionally in the grammars of children with SLI at a rate lower than the optionality evident in younger controls. Three groups of preschool children participated: 37 children with SLI, and two control groups, one of 40 MLU-equivalent children and another of 45 age-equivalent children. Three kinds of evidence support the conclusion that a set of morphemes that marks Tense can be considered a clinical marker: (a) low levels of accuracy for the target morphemes for the SLI group relative to either of the two control groups; (b) affectedness for the set of morphemes defined by the linguistic function of Tense, but not for morphemes unrelated to Tense; and (c) a bimodal distribution for Tense-marking morphemes relative to age peers, in which the typical children are at essentially adult levels of the grammar, whereas children in the SLI group were at low (i.e., non-adultlike) levels of performance. The clinical symptoms are evident in omissions of surface forms. Errors of subject-verb agreement and syntactic misuses are rare, showing that, as predicted, children in an EOI stage who are likely to mark Tense optionally at the same time know a great deal about the grammatical properties of finiteness and agreement in the adult grammar. The findings are discussed in terms of alternative accounts of the grammatical limitations of children with SLI and implications for clinical identification.

Child↗
PubMed1995

Quick Incidental Learning (QUIL) of words by school-age children with and without SLI.

This study examined Quick Incidental Learning (QUIL) of novel vocabulary by two groups of school-age children, those who were developing language normally and those who demonstrated a specific language impairment (SLI). The experimental items consisted of 20 words that referred to one of four semantic classes: object, attribute, action, and affective state. Videotaped stories were used to introduce the novel words, and word learning was measured by a picture-pointing task. For the normally developing children, the results documented a robust ability to learn words in the early school years. Comprehension gains were observed for all four word types, with the greatest gain made on the object labels. The children with SLI also demonstrated some word-learning ability, but their gain was significantly less than that of their normally developing peers. Although the general pattern of word effects was similar across the two groups, the children with SLI demonstrated a particularly low gain on words from the action class.

Age Factors↗
PubMed1995

Specific language impairment as a period of extended optional infinitive.

English-speaking children with specific language impairment (SLI) are known to have particular difficulty with the acquisition of grammatical morphemes that carry tense and agreement features, such as the past tense -ed and third-person singular present -s. In this study, an Extended Optional Infinitive (EOI) account of SLI is evaluated. In this account, -ed, -s, BE, and DO are regarded as finiteness markers. This model predicts that finiteness markers are omitted for an extended period of time for nonimpaired children, and that this period will be extended for a longer time in children with SLI. At the same time, it predicts that if finiteness markers are present, they will be used correctly. These predictions are tested in this study. Subjects were 18 5-year-old children with SLI with expressive and receptive language deficits and two comparison groups of children developing language normally: 22 CA-equivalent (5N) and 20 younger, MLU-equivalent children (3N). It was found that the children with SLI used nonfinite forms of lexical verbs, or omitted BE and DO, more frequently than children in the 5N and 3N groups. At the same time, like the normally developing children, when the children with SLI marked finiteness, they did so appropriately. Most strikingly, the SLI group was highly accurate in marking agreement on BE and DO forms. The findings are discussed in terms of the predictions of the EOI model, in comparison to other models of the grammatical limitations of children with SLI.

Child↗
PubMed1995

Redirects: a strategy to increase peer initiations.

Preschoolers' verbal abilities influence their verbal interactions with play partners. Previous research has suggested that preschoolers with specific language impairment (SLI) are more likely to initiate conversations with adults than with peers, as compared to their typically developing peers. This study investigated a teacher-implemented procedure, redirects, as a means to facilitate initiations to peers. A redirect occurs when a child initiates to the teacher, and the teacher then suggests the child initiate to a peer, thereby redirecting the child from an adult to a peer. Four preschool boys with SLI participated in the study. The teacher training was successful in increasing the teacher's ability to redirect the children's initiations. The children consistently responded to redirects by initiating to peers, and most redirected initiations received conversational responses from peers. Generalization effects to spontaneous peer initiations following the intervention period were demonstrated for 2 of the boys.

Child, Preschool↗
PubMed1994

Frequency of input effects on word comprehension of children with specific language impairment.

Children with specific language impairment (SLI) are known to have limited lexicons. Previous studies implicate a possible processing problem, in the form of a limited ability to comprehend new words in settings that require Quick Incidental Learning (QUIL). This study investigates further the factors contributing to limited QUIL by examining the effects of input frequency and word type (nouns vs. verbs). In addition, immediate versus long-term memory was examined for possible problems with storage mechanisms. Subjects were 30 5-year-old SLI children with receptive and expressive language deficits and two comparison groups of normally developing children: 30 MLU-equivalent and 30 CA-equivalent. The subjects were randomly assigned to one of three experimental conditions in which they viewed video story presentations in which targeted words were embedded. The conditions varied by number of word presentations, 0, 3, or 10. The 0 condition was a control condition in which familiar words were presented. Children's word comprehension was tested immediately following viewing and again several days later. The findings confirm a strong frequency effect, but one that is influenced by group status, word type, and retention demands. There is evidence of a robust representational mapping ability for SLI, which is at the same time modulated by a minimum input constraint and apparent problems with storage into long-term memory.

Child↗
PubMed1994

Preferences for verb interpretation in children with specific language impairment.

This study examined initial preferences for verb interpretation by children with specific language impairment (SLI), MLU-matched children, and age-matched children. Each child watched motion and change-of-state activity scenes on videotape and was then asked to point to the scene that depicted a novel verb, thereby indicating a preferred interpretation. The children were also asked to label the same activity scenes on a second tape. The findings indicated that the 5-year-old age-matched children exhibited a significant verb interpretation preference for the change-of-state scenes, whereas the children with specific language impairment and their 3-year-old MLU-matched peers did not have an interpretation preference for either the motion or change-of-state scenes. The children's labeling of the activity scenes yielded findings that further supported group differences on the two semantic verb categories. The findings suggest that children's initial verb interpretation biases vary relative to age and language proficiency.

Age Factors↗
PubMed1994

Influence of communicative competence on peer preferences in a preschool classroom.

Recent research suggests that children's linguistic competence may play a central role in establishing social acceptance. That possibility was evaluated by examining children's peer relationships in a preschool classroom attended by children with varying degrees of communication ability. Three groups of children were compared: children with normally developing language skills (ND), children with speech and/or language impairments (S/LI), and children learning English as a second language (ESL). Two sociometric tasks were used to measure peer popularity: positive nominations and negative nominations. Children in the ND group received more positive nominations than the children in either the ESL or S/LI groups. When the children's positive and negative nominations were combined to classify them as Liked, Disliked, Low Impact, or Mixed, the ND children predominated in the Liked cell, whereas the other two groups of children fell into the Disliked or Low Impact cells. In addition, the PPVT-R, a receptive measure of single-word vocabulary, was found to be the best predictor of peer popularity. The findings are discussed in terms of a social consequences account of language limitations.

Child Language↗
PubMed1993

Plural acquisition in children with specific language impairment.

A plural elicitation task and a nominal compounding task were administered to a group of children with SLI and two groups of normally developing children, an age-equivalent group (CA) and a language-equivalent group (MLU). Across tasks, differences between the CA and SLI groups were significant, but differences between the MLU and SLI groups were not. These findings suggest that by 5 years of age, children with SLI demonstrate a productive and differentiated plural system. However, unlike the normally developing children, the pluralization skills of the children with SLI were affected by input frequency, with nouns that are frequently pluralized in everyday conversation more readily inflected than ones that are infrequently pluralized. Three explanations within a model of linguistic normalcy are proposed to account for the frequency effect. These include (a) delayed independence of rule use, (b) linguistic vulnerability, and (c) a faulty lexicon.

Child Language↗
PubMed1993

Morphological deficits of children with SLI: evaluation of number marking and agreement.

Three accounts of the grammatical deficits of children with specific language impairment (SLI), that is, Missing Feature, Surface Account, and Missing Agreement, were evaluated by examining children with SLI and language-matched non-SLI children's acquisition of number marking and number agreement. The data consisted of spontaneous language transcripts from 108 preschool children. Number marking was evaluated using five indices of plural development: percent of use in obligatory contexts, lexical productivity, selectivity, contrastivity, and morphological productivity. Two levels of number agreement were examined: the traditional agreement between the verb and its subject, and a new measure of agreement within the noun phrase. The results indicated that children with SLI control number marking, counter to the predictions of the Missing Feature hypothesis and the Surface Account. On the other hand, as predicted, number agreement across clausal boundaries was more difficult for the children with SLI as compared to the children in the control group. A close analysis of number marking within the noun phrase revealed two distinctive contexts, determiner+noun versus quantifier+noun. Children with SLI had more difficulty with the latter than the former, whereas the two contexts were not differentiated for the control children. Syntactic and semantic explanations are discussed as interpretive options.

Child Language↗
PubMed1992

Specific-language-impaired children's quick incidental learning of words: the effect of a pause.

It was hypothesized that the initial word comprehension of specific-language-impaired children would be enhanced by the insertion of a short pause just before a sentence-final novel word. Three groups of children served as subjects: twenty 5-year-old, specific-language-impaired (SLI) children, and two comparison groups of normally developing children, 20 matched for mean length of utterance (MLU) and 32 matched for chronological age (CA). The children were randomly assigned to two conditions for viewing video programs. The programs were animated stories that featured five novel object words and five novel attribute words, presented in a voice-over narration. The experimental version introduced a pause before the targeted words; the control version was identical except for normal prosody instead of a pause. Counter to the predictions, there was no effect for condition. Insertion of a pause did not improve the SLI children's initial comprehension of novel words. There were group main effects, with the CA matches better than either of the other two groups and no differences between the SLI children and the MLU-matched children.

Child Development↗