Supporting language development in Lebanese preschools: SLT and pre-KT practice and perception of roles.

BACKGROUND: Speech and language therapists (SLTs) are increasingly engaging in school-based interventions targeting children with language difficulties. Collaborative work between teachers and SLTs has shown to be beneficial in fostering language development in all children. Both groups of professionals have different but complementary roles in offering language support, according to children's needs. Effective collaboration between SLTs and teachers requires both parties to understand their roles and practices in schools. However, little is known about language support practices in Lebanese preschools and the roles of SLTs in these contexts. AIMS: (1) To explore the perceptions and reported practices among preschool teachers (pre-KTs) to support language development; (2) to investigate the current practices of SLTs in preschools; and (3) to understand pre-KTs' and SLTs' perceptions of the SLTs' role in Lebanese preschools. METHOD & PROCEDURES: Using a quantitative method, the study reports the results of two questionnaires (one for pre-KTs and one for SLTs) that were developed based on a review of the academic literature and adapted to the contextual realities. Questionnaires were completed in hard or soft copy by pre-KTs and through an online survey by SLTs. OUTCOMES & RESULTS: The questionnaires were completed by 1259 out of 1442 pre-KTs from 175 Lebanese preschools, and by 200 out of 391 SLTs from across Lebanon. First, the findings show that both professional groups recognize they have a role in supporting language development. Second, differences in reported practices were identified regarding language strategies for children with communication needs. In particular, pre-KTs reported less use of specific language strategies targeting children with language difficulties, while SLTs reported that their practices in schools remain primarily focused on children with communication needs. Finally, the analysis of perceptions showed a lack of acknowledgement of the SLTs' role in the prevention of communication and language disorders among all children. CONCLUSIONS & IMPLICATIONS: This study provides an overview of the perceptions and reported practices of language development support in Lebanese preschools. The majority of SLTs and pre-KTs acknowledge their role in supporting language development. However, the slight differences in perceptions of SLT roles in prevention interventions highlight the necessity for SLTs to promote their active involvement in services targeting all children. Future research will investigate how SLTs are beginning to reconceptualize their role in intervention for preschool children. This will help to better define SLTs' roles and responsibilities in educational settings and foster effective professional collaboration. What this paper adds What is already known on the subject Collaboration between teachers and SLTs has been shown to be beneficial in supporting language among all children. The way SLTs and pre-KTs view each other's roles could result in more effective professional collaboration. The SLT profession in Lebanon emerged about 20 years ago, yet SLTs are still struggling to define a framework for the scope of their practice in Lebanese preschools and to increase awareness of the relevance of their intervention in language. What this paper adds to existing knowledge The results revealed that there are major agreements between pre-KTs and SLTs concerning the support of language development in preschools. However, the findings highlight slight differences in the perception of the SLTs' role in the prevention of communication, language and literacy disorders in educational settings. It seems that their role is more commonly acknowledged for children with identified language and communication needs. Moreover, despite the strong agreement between both professionals on the role of the SLT to target all children, SLTs' practices in preschools are still mostly limited to meeting only referred and diagnosed needs in children. What are the potential or actual clinical implications of this work? This study's findings contribute to a better understanding of the perceptions regarding the roles and practices of both groups of professionals in language development. The differences in how the SLTs' roles are perceived could lead to a more difficult implementation of collaborative language practices in preschools. It is therefore necessary to ensure a better understanding of the roles played by professionals, who could receive the relevant training in undergraduate education programmes. There is also a pressing need to provide a clearer definition of SLTs' roles in educational settings by reconceptualizing them into a preventive approach in collaboration with teachers.

Functional Alterations in Order Short-Term Memory Networks in Adults With Dyslexia.

Dyslexia is characterized not only by reading impairment but also by short-term memory (STM) deficits, and this particularly for the retention of serial order information. Here, we explored the functional neural correlates associated with serial order STM performance of adults with dyslexia for verbal and visual STM tasks. Relative to a group of age-matched controls, the dyslexic group showed abnormal activation in a network associated with order STM encompassing the right intraparietal and superior frontal sulcus, and this for both verbal and visual order STM conditions. This study highlights long-lasting alterations in non-language neural substrates and processes in dyslexia.

Evidence for a specific impairment of serial order short-term memory in dyslexic children.

In order to better understand the nature of verbal short-term memory (STM) deficits in dyslexic children, the present study used the distinction between item and serial order retention capacities in STM tasks. According to recent STM models, storage of verbal item information depends very directly upon the richness of underlying phonological and semantic representations. On the other hand, storage of serial order information appears to reflect a language-independent system. Hence, if there is a fundamental STM deficit in dyslexia that is not to be explained only by the poor phonological processing abilities that characterize dyslexia, then difficulties in serial order STM should also be observed in dyslexic children. We administered tasks maximizing either serial order or item retention capacities to dyslexic children and reading age (RA) and chronological age (CA) matched controls. Dyslexic children performed significantly poorer than the CA controls on the item STM measure. Furthermore, the dyslexic group obtained inferior performance than both CA and RA control groups on the serial order STM measure. These findings highlight a severe impairment of STM for serial order information in dyslexia that cannot be reduced to a phonological processing impairment. Implications of serial order retention deficits for reading acquisition and dyslexia are discussed.

The contribution of short-term memory for serial order to early reading acquisition: evidence from a longitudinal study.

Early reading acquisition skills have been linked to verbal short-term memory (STM) capacity. However, the nature of this relationship remains controversial because verbal STM, like reading acquisition, depends on the complexity of underlying phonological processing skills. This longitudinal study addressed the relation between STM and reading decoding acquisition by distinguishing between STM for item information and STM for order information based on recent studies showing that STM for item information, but not STM for order information, recruits underlying phonological representations. If there is a specific link between STM and reading decoding acquisition, STM for order information should be an independent predictor of reading decoding acquisition. Tasks maximizing STM for serial order or item information, measures of phonological abilities, and reading tests were administered to children followed from kindergarten through first grade. We observed that order STM capacity, but not item STM capacity, predicted independent variance in reading decoding abilities 1 year later. These results highlight the specific role of STM for order in reading decoding acquisition and argue for a causal role of order STM capacity in reading acquisition. Mechanisms relating STM for order information and reading acquisition are discussed.

Attention supports verbal short-term memory via competition between dorsal and ventral attention networks.

Interactions between the neural correlates of short-term memory (STM) and attention have been actively studied in the visual STM domain but much less in the verbal STM domain. Here we show that the same attention mechanisms that have been shown to shape the neural networks of visual STM also shape those of verbal STM. Based on previous research in visual STM, we contrasted the involvement of a dorsal attention network centered on the intraparietal sulcus supporting task-related attention and a ventral attention network centered on the temporoparietal junction supporting stimulus-related attention. We observed that, with increasing STM load, the dorsal attention network was activated while the ventral attention network was deactivated, especially during early maintenance. Importantly, activation in the ventral attention network increased in response to task-irrelevant stimuli briefly presented during the maintenance phase of the STM trials but only during low-load STM conditions, which were associated with the lowest levels of activity in the dorsal attention network during encoding and early maintenance. By demonstrating a trade-off between task-related and stimulus-related attention networks during verbal STM, this study highlights the dynamics of attentional processes involved in verbal STM.

The commonality of neural networks for verbal and visual short-term memory.

Although many neuroimaging studies have considered verbal and visual short-term memory (STM) as relying on neurally segregated short-term buffer systems, the present study explored the existence of shared neural correlates supporting verbal and visual STM. We hypothesized that networks involved in attentional and executive processes, as well as networks involved in serial order processing, underlie STM for both verbal and visual list information, with neural specificity restricted to sensory areas involved in processing the specific items to be retained. Participants were presented sequences of nonwords or unfamiliar faces, and were instructed to maintain and recognize order or item information. For encoding and retrieval phases, null conjunction analysis revealed an identical fronto-parieto-cerebellar network comprising the left intraparietal sulcus, bilateral dorsolateral prefrontal cortex, and the bilateral cerebellum, irrespective of information type and modality. A network centered around the right intraparietal sulcus supported STM for order information, in both verbal and visual modalities. Modality-specific effects were observed in left superior temporal and mid-fusiform areas associated with phonological and orthographic processing during the verbal STM tasks, and in right hippocampal and fusiform face processing areas during the visual STM tasks, wherein these modality effects were most pronounced when storing item information. The present results suggest that STM emerges from the deployment of modality-independent attentional and serial ordering processes toward sensory networks underlying the processing and storage of modality-specific item information.