The role of memory in processing relative clauses in children with Specific Language Impairment

Purpose: This study investigated the relationship between 2 components of memory - phonological short-term memory (pSTM) and working memory (WM) - and the control of relative clause constructions in children with specific language impairment (SLI). Method: Children with SLI and 2 control groups - an age-matched and a younger group of children with typical development - repeated sentences, including relative clauses, representing 5 syntactic roles and 2 levels of matrix clause complexity. The Working Memory Test Battery for Children was administered. Results: All 3 groups showed significant associations between pSTM and both types of matrix clause construction. For children with SLI, significant associations emerged between (a) WM and more complex matrix clause constructions, (b) WM and relative clauses including a range of syntactic roles, and (c) pSTM and the least difficult syntactic role. In contrast, the age-matched control group could repeat almost all syntactic roles without invoking the use of either memory component. Conclusions: The role of pSTM and WM in the production of relative clauses by children with SLI is influenced by the degree of difficulty of the structure to be recalled. In therapy, the effect of WM limitations can be minimized by approaching each structure within the context of a simple matrix clause

Profiling relative clause constructions in children with specific language impairment

This study highlights the importance of error analysis in providing a comprehensive profile of an individual’s grammatical ability with regard to relative clause (RC) constructions. The aim was to identify error patterns in the production of RCs by English-speaking, school-aged children with specific language impairment (SLI) and to relate them to their level of competence with these structures. Children with SLI (mean age = 6;10, n = 32) and two control groups – a typically developing group matched for age (mean age = 6;11, n = 32) and a younger typically developing group (mean age = 4;9, n = 20), repeated sentences containing RCs that represented a range of syntactic roles. Data are presented on three distinct error patterns – the provision of simple sentences, obligatory relativizer omission and RC conversions. Each is related to the level of competence on RCs that each child has achieved

Investigating relative clauses in children with specific language impairment

Background: It is well documented that children with Specific Language Impairment (SLI) experience significant grammatical deficits. While much of the focus in the past has been on their morphosyntactic difficulties, less is known about their acquisition of complex syntactic structures such as relative clauses. The role of memory in language performance has also become increasingly prominent in the literature. Aims: This study aims to investigate the control of an important complex syntactic structure, the relative clause, by school age children with SLI in Ireland, using a newly devised sentence recall task. It also aims to explore the role of verbal and short-termworking memory in the performance of children with SLI on the sentence recall task, using a standardized battery of tests based on Baddeley’s model of working memory. Methods and Procedures: Thirty two children with SLI, thirty two age matched typically developing children (AM-TD) between the ages of 6 and 7,11 years and twenty younger typically developing (YTD) children between 4,7 and 5 years, completed the task. The sentence recall (SR) task included 52 complex sentences and 17 fillers. It included relative clauses that are used in natural discourse and that reflect a developmental hierarchy. The relative clauses were also controlled for length and varied in syntactic complexity, representing the full range of syntactic roles. There were seven different relative clause types attached to either the predicate nominal of a copular clause (Pn), or to the direct object of a transitive clause (Do). Responses were recorded, transcribed and entered into a database for analysis. TheWorkingMemory Test Battery for children (WMTB-C—Pickering & Gathercole, 2001) was administered in order to explore the role of short-term memory and working memory on the children’s performance on the SR task. Outcomes and Results: The children with SLI showed significantly greater difficulty than the AM-TD group and the YTD group. With the exception of the genitive subject clauses, the children with SLI scored significantly higher on all sentences containing a Pn main clause than those containing a transitive main clause. Analysis of error types revealed the frequent production of a different type of relative clause than that presented in the task—with a strong word order preference in the NVN direction indicated for the children with SLI. The SR performance for the children with SLI was most highly correlated with expressive language skills and digit recall. Conclusions and Implications: Children with SLI have significantly greater difficulty with relative clauses than YTD children who are on average two years younger—relative clauses are a delay within a delay. Unlike the YTD children they show a tendency to simplify relative clauses in the noun verb noun (NVN) direction. They show a developmental hierarchy in their production of relative clause constructions and are highly influenced by the frequency distribution of the relative clauses in the ambient language

Developmental Language Disorder: Ask the experts

Dr Pauline Frizelle and Professor Cristina McKean examine dosage effects in interventions for children and young people with developmental language disorder

The development of a core key word signing vocabulary (Lámh) to facilitate communication with children with down syndrome in the first year of mainstream primary school in Ireland

Key word signing, an unaided augmentative, and alternative communication (AAC) system is commonly used by children with Down syndrome who attend mainstream primary schools. To ensure the successful use of key word signing within a mainstream environment, a meaningful, contextually appropriate sign vocabulary must be available to all communication partners. The aim of this study was to develop a core school-based key word signing vocabulary to facilitate effective communication between children with Down syndrome and their communication partners in the first year of mainstream primary school. Four key groups-participants with Down syndrome, their peers, teachers, and special needs assistants-and a speech-language pathologist contributed to the vocabulary over the course of an academic year, through observations, semi-structured interviews, and guided tours of the school environment. Based on criteria of frequency and commonality, 140 words were considered to be core vocabulary. The current study provides new insights into the complex process of vocabulary selection for children who use key word signing at school and highlights the importance of access to a functional sign vocabulary in facilitating inclusive education practices

The effect of different speaker accents on sentence comprehension in children with speech sound disorder.

There is substantial evidence that a speaker’s accent, specifically an unfamiliar accent, can affect the listener’s comprehension. In general, this effect holds true for both adults and children as well as those with typical and impaired language. Previous studies have investigated the effect of different accents on individuals with language disorders, but children with speech sound disorders (SSDs) have received little attention. The current study aims to learn more about the ability of children with SSD to process different speaker accents. Fifteen children with SSD aged between 4;01 and 5;11 years, and 16 typically developing children matched on language ability, age, socioeconomic status, gender and cognitive ability participated in the current study. A sentence comprehension task was carried out with each child, requiring them to follow instructions of increasing length spoken in three different accents – (i) a local Irish (Cork) accent, (ii) a regional North American accent and (iii) a non-native Indian English accent. Results showed no significant group difference and speaker accent did not significantly impact children’s performance on the task. The results are discussed in relation to factors that influence accent comprehension, and their implications for children’s underlying phonological representations

An exploration of speech and language pathology student and facilitator perspectives on problem-based learning online.

This mixed-methods study explored the perspectives of second and third-year Speech Language Pathology (SLP) students and facilitators on Problem-Based Learning (PBL) online. As a result of the COVID-19 pandemic, PBL was delivered online for the academic year 2020-2021 via a virtual learning environment. Forty-seven students and five facilitators completed an online survey designed to evaluate the quality of individual and collaborative learning in the PBL online context. All participants had experience of pre-COVID-19 face-to-face PBL. Thematic analysis and descriptive statistics were used to analyse qualitative and quantitative data, respectively. Demonstrated a preference from both students and facilitators to maintain PBL in a face-to-face format. Aspects of functionality offered by the virtual platform assisted in the PBL process, however technical and environmental barriers impeded virtual delivery. Responses suggest that the development of rapport and interactivity levels online are not equivalent to face-to-face PBL, and these factors were perceived by participants to negatively influence the learning process. Perspectives on the role of the facilitator online convey divergent views between second and third years which reflected a change in facilitator style to support more independent learning in line with students' progression through the course. Our findings demonstrate that students and facilitators are open to future implementation of a blended model of PBL. Participants reported benefits such as reduction in indirect education costs and acquisition of a digital skillset. However, our study indicates a preference for enhanced social presence afforded by face-to-face PBL

UK speech and language therapists’ assessment of children's expressive language, and functional impairment and impact, following the CATALISE publications

Background: In 2016/17, the CATALISE Consortium published the results of a multinational and multidisciplinary Delphi consensus study, representing agreement among professionals about the definition and process of identification of children with Developmental Language Disorder (DLD) (Bishop et al.,2016, 2017). The extent to which the current clinical practice of UK speech and language therapists (SLTs) reflects the CATALISE consensus statements is unknown. Aims: To investigate how UK SLTs’ expressive language assessment practicesreflect the CATALISE documents’ emphasis on the functional impairment andimpact caused by DLD, by examining: whether multiple sources of assess-ment information are gathered; how standardised and non-standardised sources are combined in clinical decision-making, and how clinical observation andlanguage sample analysis are utilised. Methods and Procedures: An anonymous, online survey was carried out between August 2019 and January 2020. It was open to UK-based paediatric SLTs who assess children up to age 12 with unexplained difficulties using language. Questions probed different aspects of expressive language assessment which are referred to in the CATALISE consensus statements and supplementary comments, and asked about participants’ familiarity with the CATALISE statements. Responses were analysed using simple descriptive statistics and content analysis. Outcomes and Results: The questionnaire was completed by 104 participants, from all four regions of the United Kingdom, working in a range of clinical settings with different levels of professional experience of DLD. The findings indicate that clinical assessment practices broadly align with the CATALISE statements. Although clinicians carry out standardised assessments more frequently than other types of assessment, they also gather information from other sources and use this alongside standardised test scores to inform clinical decisions. Clinical observation and language sample analysis are commonly utilised to evaluate functional impairment and impact, along with parent/carer/teacher and child report. However, asking about the child’s own perspective could be more widely utilised. The findings also highlight a lack of familiarity with the details of the CATALISE documents among two thirds of the participants. Conclusions and Implications: Assessment practices broadly align with the CATALISE statements, but there is a need for greater clarity regarding terminology and the assessment of functional language impairment and impact. This research should prompt discussion in the profession about how to further develop and adopt expressive language assessment practices which reflect the CATALISE consensus and support effective assessment

Economic evaluation of the Happy Talk pilot effectiveness trial: A targeted selective speech, language and communication intervention for children from areas of social disadvantage.

Purpose: This study presents a cost-effectiveness analysis of a targeted selective pre-school intervention programme, “Happy Talk”, which focuses on language development, by simultaneously enhancing parental interaction and the pre-school environment. Method: Happy Talk (delivered to 77 children) is an add on intervention, and is compared to usual care, adopting a healthcare perspective. Cost-effectiveness analyses were carried out using the Pre-school Language Scale 5- Total (PLS-5) for baseline analysis and the Child Health Utility Instrument (CHU9D) in a secondary analysis. Result: Baseline cost-effectiveness analysis showed Happy Talk was more effective (6.3 point change in total PLS-5 standard score – effect size 0.463SD and more expensive (€82.06) than usual care (cost-effectiveness ratio is €13.02 per unit change). Employing a proxy to estimate monetary net benefit, the benefits outweigh the costs, showing that it is cost-effective. However, results do not persist when health-related quality of life outcome measures are considered. Conclusion: Findings suggest a targeted selective public health approach, could be considered value for money to reduce the societal burden of children with low levels of speech, language and communication. However, measurement of longer term outcomes and a larger trial are required, to definitively inform policy changes

The co-construction of a reading assessment measure with adults with Down syndrome: a meaningful literacy approach

IntroductionThe need to develop appropriate measures of broad-based reading-related literacy skills for adults with Down syndrome has been highlighted in the literature. In this study we aimed to co-construct a valid and reliable assessment measure that can be used to document meaningful everyday reading, in adolescents and adults with Down syndrome.MethodsThe study was carried out in two stages. Stage 1 used an inclusive participatory design in which individuals with Down syndrome were research collaborators (n = 46). Items to be included in the measure were identified and ecological, face and content validity were established through an iterative process. In stage 2 we examined the reliability of the tool and explored potential relationships between meaningful reading score and (1) age, (2) receptive vocabulary, and (3) reading ability as measured by standardized assessments. In addition, we profiled what a pilot cohort of adults with Down syndrome read (n = 33) and how they experience reading in their everyday lives.ResultsResults showed that 46 items were generated for inclusion in the Meaningful Reading Measure (MRM). Our preliminary data showed that the tool has internal and external reliability and ecological and content validity. There were no associations between meaningful reading score and any of the other variables examined. There was considerable variability in items read (range 12–44) which reflected a broad range of reading practices. Adults with Down syndrome identified the importance of reading as a pleasurable activity and as something that aids learning.Conclusion:The MRM developed here can be used (1) as a reading intervention outcome measure to complement existing standardized tools, (2) to profile meaningful reading in adults with Down syndrome, (3) to guide reading module content, and (4) to capture change in adults’ perceptions of themselves as readers. Future work is needed to establish the tool’s sensitivity to change over time