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PubMed1980

An experimental-clinical analysis of grammatical and behavioral distinctions between verbal auxiliary and copula.

The study was designed to investigate whether auxiliary is and copular is belong to a single response class. Two children acted as subjects. The auxiliary verb was trained, then reversed, and later reinstated in one of the subjects, while the copula was similarly trained, reversed, and reinstated in the other child. Both the auxiliary and the copular sentences were tested on probes. The first subject, who was trained only on the auxiliary, was able to produce the untrained copula. When the auxiliary production was reversed, the copular production also was reversed. Finally, when the auxiliary production was reinstated, the copular production also was reinstated. For the second subject, the auxiliary production was generated, reversed, and reinstated by training, reversing, and reinstating only the copula. These results suggest that the copular and auxiliary is belong to a single response class and training either of them is sufficient to generate the production of both.

Child, Preschool↗
PubMed1985

Linguistic environment of the deaf child: a focus on teachers' use of nonliteral language.

Teachers' communication with deaf and hearing children was compared to identify differences in the teachers' use of two types of nonliteral language: idiomatic language and indirect requests. Two groups of teachers of the deaf were observed, one using oral language only and the other using Total Communication. A third group consisted of teachers of normally hearing children. No differences were found in teachers' use of nonliteral language when talking to hearing children as compared to teachers talking to oral deaf children. Reduced use of idiomatic language occurred, in both the oral and signed portions of communication, only when Total Communication was used. No differences were observed in the oral portion of the three groups' use of indirect requests. However, only 55% of these requests were encoded nonliterally in the signed portion of utterances.

Age Factors↗
PubMed1986

Direct language instruction and interactive language instruction with language delayed preschool children: a comparison study.

Direct language instruction and interactive language instruction are based on highly distinct theoretical positions and incorporate very different behavioral techniques. A purpose of the present study was to evaluate the relative effectiveness of direct and interactive language instruction in promoting a variety of language skills. A second purpose was to determine if an aptitude and treatment interaction influenced the outcome of intervention. Forty-four children of preschool age were randomly assigned to classrooms using either direct instruction or interactive instruction. After 8 months, children in both settings improved significantly and substantially on syntactic and semantic measures. There were no differences between the two groups at posttest, nor were there any significant aptitude by treatment interactions for either cognitive or language pretest measures. The results of this study, and a careful examination of previously reported interactions, suggest that such an interaction has yet to be demonstrated.

Child, Preschool↗
PubMed1991

The efficacy of script contexts in language comprehension intervention with children who have mental retardation.

This study was designed to investigate the effects of script-based and nonscript-based treatment on the language comprehension of 4 preschool children with mental retardation. An alternating treatments design (ATD) in combination with a multiple baseline design was used to evaluate treatment effects. Treatments were comprised of three script routines and three nonscript activities. Two semantic constructions were selected for training and counterbalanced across subjects and treatments. Daily probes were administered to assess the effects of the treatments. The script-based treatment was more effective than the nonscript treatment in facilitating comprehension of the targeted semantic constructions in 3 of the 4 subjects.

Adolescent↗
PubMed1993

Two approaches to the facilitation of grammar in children with language impairment: an experimental evaluation.

Two approaches to grammar facilitation in preschool-age children with language impairment were evaluated. One approach was administered by a speech-language pathologist and the other was presented by the subjects' parents, who were trained by the speech-language pathologist. Both treatment packages ran for 4 1/2 months and made use of focused stimulation procedures and a cyclical goal-attack strategy. Subjects were 30 children between the ages of 3:8 and 5:10 (years:months) who had marked delays in grammatical development. Children who served in a delayed-treatment control group averaged no gains over their no-treatment period. In contrast, large treatment effects were observed for both treatment groups on three of four measures of grammatical expression. However, closer inspection of the data revealed that the effects for the clinician treatment were more consistent across treatment administrations than were those for the parent treatment. Although the specific contributions of the focused stimulation procedures and the cyclical goal attack strategy were not evaluated, the results support the viability of these components as parts of larger treatment packages. The results also support the participation of parents as primary intervention agents in grammar facilitation programs. When parents take such a large role in the intervention process, however, it is imperative that the children's progress be monitored carefully and that program adjustments be made whenever gains are smaller than expected.

Child↗
PubMed1993

Following the child's lead when teaching nouns to preschoolers with mental retardation.

The current study tested the effects of following the child's attentional lead on the efficiency of object-label teaching. Three preschoolers with mental retardation participated. An alternating-treatments design was used to test relative treatment effects. An elicited-production method of teaching object labels was used to present the words under two conditions. Two sets of 32 nonsense words and unfamiliar objects were randomly assigned to the two teaching conditions to create equivalent goal sets and to control for prior exposure to the words and objects. Under the "following-the-child's-lead" condition, teaching episodes occurred only when the child had sustained attention to a target object or intentionally communicated about the target object. Under the "recruiting-the-child's-attention" condition, the child's attention was recruited intrusively away from his or her object of interest and toward the target object before each teaching episode began. The number of teaching trials per item and per session was carefully controlled. Results indicated that object-label teaching was more efficient under the following-the-child's-lead condition for all three participants.

Child Language↗
PubMed1993

Facilitating prelinguistic communication skills in young children with developmental delay.

Very little research has focused on the development and evaluation of intervention strategies designed to facilitate the acquisition of prelinguistic communication skills. We conducted two experiments to determine the effects of a milieu teaching approach on the acquisition and generalization of specific prelinguistic communication skills. In the first experiment, we utilized this intervention approach within a multiple baseline design to teach prelinguistic requesting, commenting, and vocal imitation to a single subject with Down syndrome and language delay. The results indicated that the intervention approach was effective at facilitating the child's use of these skills within the treatment setting. Therefore, in the second experiment we conducted a more comprehensive analysis of this approach with 4 subjects with mental retardation. Three of these subjects were taught to request, and 1 subject was taught both to request and to comment. The effects were experimentally evaluated with multiple baseline across subjects design. The results indicated that the intervention was effective in eliciting the intervention targets within the training setting for all 4 subjects. All 4 subjects showed evidence of generalization across stimulus materials, setting, teachers, and interaction style. There was also evidence of reciprocal effects on how classroom teachers in the generalization setting interacted with the subjects as a result of changes in the child's communication behavior.

Child, Preschool↗
PubMed1993

Communication behaviors of infants with hearing loss and their hearing mothers.

This study documented communication behaviors of hearing mothers and infants with a hearing loss that had been identified before 9 months of age (Group HL). Their behaviors were compared with those of mothers and infants without hearing loss (Group H). Each group was composed of 18 dyads videotaped during mother-infant play with toys at 12- and 18-months. Group HL mothers produced more gestural and tactile communications (but similar numbers of vocal communications) compared to H mothers. In contrast with earlier reports, infants with and without hearing loss were similar in quantity of gestural and vocal expressive prelinguistic communication behaviors. Despite group similarities in quantity of prelinguistic communications, H infants as a group surpassed HL infants in expression of formal language by 18 months. There was considerable variation within each group in formal language expression, however, with performance of some HL infants matching that of H infants.

Adult↗
PubMed1993

Comparison of two methods for promoting productive vocabulary in late talkers.

This investigation compared the effectiveness of two language treatment methods, modeling versus modeling plus evoked production, in promoting productive vocabulary in three toddlers identified as late talkers. A single-subject alternating treatments design was employed in this study in which different sets of words were taught under the two treatment methods during group and individual instruction. Some evidence of differential patterns of response to the treatment types was found for two subjects, but the subjects differed as to which particular treatment method was associated with better performance. Neither treatment method was effective for the third subject. Dynamic assessment measures were only marginally useful in predicting overall lexical learning potential in these subjects, and did not predict response to the two teaching methods. Implications of these results are discussed with regard to the role of language intervention for late talkers.

Child, Preschool↗
PubMed1994

Emergence of visual-graphic symbol combinations by youth with moderate or severe mental retardation.

Research and practice on augmentative communication for persons with moderate or severe mental retardation have primarily targeted the acquisition and use of single symbols. Symbol combinations, however, provide insight into how augmented communicators use individual symbols to build more complex communications. In Study 1, untaught symbol combinations produced during natural communication interactions by 7 subjects with mental retardation were examined for their semantic, ordering, and generalization patterns. The symbol combinations largely resembled those produced by young speaking language learners, suggesting that the augmented communicators were following typical patterns of communication in generating their symbol combinations. In Study 2, we examined the symbol combinations modeled for subjects by their partners. The structure of the modeled combinations did not resemble the children's productions, indicating that the children could not have relied on simple rote imitation for their combination production. These results suggest that augmented communicators with mental retardation may use their symbols as speaking children use oral words in the development of complex communications.

Adolescent↗
PubMed1994

Changes in the generativity and use of semantic relationships concurrent with milieu language intervention.

Changes associated with a milieu language intervention implemented to teach productive semantic relationships (e.g., action-object combinations) were investigated. Subjects were 11 young children with borderline to moderate levels of mental retardation, all in the early stages of language development. Following a baseline period, each subject received three to four training sessions per week in a small group interactive play situation. Measures of generativity were analyzed via pre/post group comparisons. Concurrent with the intervention subjects showed substantial gains in their ability to generatively produce semantic relationships in the intervention context and across settings, adults, and interaction styles. Subjects also correctly responded to an increasing proportion of target probe questions in both the intervention and generalization settings. The results suggest that, for most of the subjects, milieu teaching was associated with enhanced generativity and use of semantic relationships.

Child↗
PubMed1995

Adult partner-augmented communication input to youth with mental retardation using the System for Augmenting Language (SAL).

The primary purpose of this study was to characterize the frequency and nature of augmented input that adult partners provided to 13 youth with mental retardation as they began to use the System for Augmenting Language (SAL). Analyses of youth-partner interactions revealed differences in the frequency with which home and school partners provided augmented input and in the manner and style of home and school partners' augmented input, particularly in directiveness and position of lexigram symbols within Utterances. Overall, partners naturally provided augmented input in a manner likely to promote youth's learning of the SAL.

Adolescent↗
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↗
PubMed1997

Two models of grammar facilitation in children with language impairments: phase 2.

Fey, Cleave, Long and Hughes (1993) demonstrated the effectiveness of two 5-month interventions for preschoolers with problems in expressive grammar. This article reports the results of an additional 5-month intervention phase for 18 of the original participants. Results indicated that although participants improved during Phase 2, improvements generally were not as strong as those noted for Phase 1. Gains were larger and more consistent for children who received the relatively costly clinician-administered approach than for those who received a less expensive parent-administered intervention. The parent intervention was successful in helping parents to use sentence recasts, and especially so for parents of children at relatively early stages of grammatical development, Finally, children who were dismissed after a highly successful treatment Phase 1 generally exhibited no gains over the no-treatment Phase 2.

Child↗
PubMed1997

The influence of peer models on the play scripts of children with specific language impairment.

This investigation included two phases of inquiry that examined the effects of peer modeling upon the play scripts of children with specific language impairment (SLI). The first study employed a pretest-posttest control group design involving two groups of children with SLI (10 who participated in the experimental treatment and 10 controls) and a group of peer models (10 children with normal language development). The treatment involved dyadic play sessions in which children with SLI were paired with a normal language peer model. Significant differences were found between the play script reports of the experimental (SLI-E) and control groups (SLI-C) of children with specific language impairment. The second study, utilizing single-case methodology, involved 6 children with SLI who participated in the control group of Study 1, plus 2 peer models. Play dyads consisted of either two children with SLI or one child with SLI and a normal language peer. Results of this study provided support for the contention that play interactions with normal language peers facilitates increases in the play-script reports of children with SLI.

Child, Preschool↗
PubMed1997

Training and generalized production of wh- and NP-movement structures in agrammatic aphasia.

The present research examines production of "complex" sentences, which involve movement of noun phrases (NPs), in 2 agrammatic aphasic subjects. According to linguistic theory (Chomsky, 1991, 1993), such sentences are derived using one of two movement operations, either wh- or NP-movement, subsumed under the general rule "move alpha." In this experiment recovery of both wh- and NP-movement derived sentences was investigated using a treatment research paradigm. Subjects were sequentially trained to produce either wh-movement (i.e., who questions, object clefts) or NP-movement (i.e., passives, subject-raising structures) derived sentences. Throughout training, generalization to untrained sentences relying on both types of movement was tested. The influence of training on aspects of narrative discourse also was examined. Results showed generalization patterns constrained to type of movement. Training wh-movement structures resulted in generalized production of untrained wh-movement structures without influencing production of NP-movement structures. Similarly, training of NP-movement structures resulted in generalization only to other sentence types also relying on NP-movement. Aspects of sentence production in narrative contexts also was improved with treatment. These data indicate that movement to an argument (A) position as in NP-movement is distinct from movement to a non-argument (A-bar) position, required in wh-movement. The site where movement terminates in the s-structure of noncanonical sentences appears to influence sentence production. These findings show that linguistic properties of sentences influence sentence production breakdown and recovery in aphasia.

Aphasia, Broca↗
PubMed1997

Effects of lexical intervention on the phonology of late talkers.

The purpose of this investigation is to determine whether a focused stimulation intervention focusing on lexical training has indirect, secondary effects on children's phonological abilities. Twenty-five toddlers with expressive vocabulary delays and their mothers were randomly assigned to intervention and control groups. The children were between 23 and 33 months of age at entry into the study and were at the single-word stage of language development. Parents of late talkers in the experimental group were trained to employ frequent, highly concentrated presentations of target words without requiring responses. Two measures of phonological diversity (i.e., syllable structure level and consonant inventory) and one measure of accuracy of production (i.e., percent consonants correct) were measured prior to and following intervention within the context of mother-child interactions. The toddlers who received intervention made treatment gains in two areas of phonological ability. They used a greater variety of complex syllable shapes and expanded their speech sound inventories to include more consonant sounds in both initial and final position. In contrast, there were no effects of language treatment on the accuracy of correct production when compared to the adult phonological system.

Adult↗