Journal/Magazine Articles
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This collection contains original research articles, review articles and case reports published in local and international peer reviewed journals by the staff members of the Faculty of Medicine
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Item When No Speech Norms Exist: Observations From Sinhala(American Speech-Language-Hearing Association, 2024-11) Hettiarachchi, S.; Ranaweera, M.; Saleem, S.; Krishnaveni, K.PURPOSE A well-established set of language-specific norms for phonological development is imperative in the assessment of child speech sound difficulties. Currently, English norms are used clinically (in the absence of norms for local languages) to determine if a child displays age-appropriate, delayed or disordered speech patterns in Sinhala. This preliminary exploratory study aimed to document phonological processes observed in typically developing Sinhala-speaking children aged 3;0-6;11 (years;months).METHOD The Test of Articulation and Phonology-Sinhala, a picture-based assessment, was devised by the researchers and administered to 102 Sinhala-speaking children from three geographical locations (Colombo, Kandy, and Gampaha). The quantitative measures included percent consonants correct, percent vowels correct, and percent phonemes correct, while the qualitative analysis identified phonological processes.RESULTS The quantitative results showed a marked influence of age on phoneme production accuracy with over 75% consonants correct by 3 years 6 months. The qualitative findings demonstrate common typical phonological processes and less common phonological processes in Sinhala compared to the speech pathology and cross-linguistic literature. Common phonological processes included fronting, stopping, and weak syllable deletion widely documented in linguistic and speech-language pathology literature. Many shared phonological processes were observed between Sinhala and Sri Lankan Tamil, the two main local languages, including fronting of retroflex sounds and lateralization. The phonological process of denasalization of prenasalized stops was observed in Sinhala, with no documentation of the phonological process found within the mainstream speech-language pathology literature.CONCLUSION AND IMPLICATIONS: These findings reinforce the need to document and use language-specific typical phonological processes in Sinhala given the implications for early and accurate identification of speech difficulties and intervention.Item /t/ before /ʈ/ or /ʈ/ before /t/: Emerging trends from a preliminary study of consonant acquisition in typically developing sinhala-speaking children aged 3 to 6 years(Ubiquity Press., 2021) Hettiarachchi, S.; Ranaweera, M.; Rajapaksha, R.M.W.Purpose: Speech and language therapists use developmental norms established for consonant acquisition to determine whether a child has age-appropriate, delayed or disordered speech skills. There are currently no established norms for the acquisition of Sinhala consonants, which have implications for accurate diagnosis. The aim of this study was to document preliminary trends observed in the trajectory of consonant sound development in Sinhala-speaking young children so as to form a set of ‘working norms’. Method: A picture-based articulation assessment was administered to 70 typically developing children who were between 3 years and 6 years 11 months of age. Results: Regarding the rate of acquisition and order of acquisition, the findings displayed trends comparable to general patterns of consonant mastery reported within cross-linguistic studies. In addition, a different rate of acquisition and order of mastery was observed for both uncommon Sinhala language-specific speech sounds showing ambient language effects and for a few common sounds occurring in Sinhala and other languages. Conclusion & Implications: The convergence and divergence in the rate and order of Sinhala consonant acquisition compared to the cross-linguistic literature has important clinical implications for assessment, early identification of speech difficulties and intervention within speech and language therapy practice in Sri Lanka. © 2021, Vrije University. All rights reserved.Item The Effectiveness of using multi-sensory children’s stories on vocabulary development in young deaf and hard-of-hearing children(Taylor & Francis, 2021) Hettiarachchi, S.; Ranaweera, M.; Disanayake, H.M.L.N.ABSTRACT: Young deaf and hard-of-hearing children enrolling in school in Sri Lanka often display language delay due to limited amplification and limited language stimulation. The scarcity of speech and language therapy support within the educational context at present necessitates a rethink of service-delivery models to reach more children. Multi-sensory stimuli and traditional children’s stories have been used in speech and language therapy to promote vocabulary development in children experiencing language-learning difficulties. Fifteen deaf or hard-of-hearing children from three different educational contexts were offered a three week “Katha malu” multi-sensory children’s story programme through the class teacher. The programme focused on developing receptive and expressive vocabulary of a set of 30 target words. The programme was offered using a combination of Sri Lankan Sign Language and Spoken Sinhala. The participants' receptive and expressive vocabulary knowledge on the target words was assessed using a specially devised picture-based vocabulary assessment pre- and post-intervention. The results show positive gains at both group and individual levels on receptive and expressive vocabulary skills. There was a positive effect of familiarity with the story with the overall vocabulary gains more prominent for the older, more traditional story. The findings of this study highlight the possibility of offering access to language stimulation programmes at classroom-level facilitated by the class teacher, under the guidance of a speech and language therapist. KEYWORDS: Early childhood education, language facilitation, engagement of children with adequate or inadequate amplification, multi-sensory, traditional storiesItem Colour Me…Orange? incorporating aspects of the colourful semantics approach into a TESOL programme at preschool(The Chinese University of Hong Kong, 2018) Hettiarachchi, S.; Ranaweera, M.; Walisundara, D.C.Among the challenges faced by Sri Lankan children learning English as an additional or second language is the accuracy of word order and vocabulary knowledge. The Colorful Semantics approach has been used successfully in the UK and in Australia with children experiencing language-learning difficulties, with many programmes devised by Speech and Language Therapists. It uses thematic roles and a colour-coding system to support the development of syntax through a semantic route. The aim of this study was to evaluate the efficacy of using aspects of Colourful Semantics to develop expressive language skills (accurate responses to target wh questions, sentence length and syntactic complexity) in young learners of English. Twenty-one preschool children in TESL classrooms were included in the study. Key aspects of Colourful Semantics were introduced as a whole-class approach using children’s storybooks, colour-coding and signing with lessons offered thrice a week for a month together with supplementary activities. Pre- and post-intervention measures were undertaken on two expressive language measures of sentence-length and syntax. In this paper we will discuss the programme offered, the pre- and post intervention assessment results, and the benefits of incorporating aspects of the Colourful Semantics approach into the English language teaching classroom.Item The Effectiveness of using the colourful semantics approach to support language development with children who are deaf or hard-of-hearing(Taylor & Francis, 2019) Hettiarachchi, S.; Ranaweera, M.ABSTRACT: The lack of early identification, suboptimal language stimulation and limited remedial services in Sri Lanka for children who are deaf or hard-of-hearing place them at-risk of language delay. The reality for many preschool and primary school children entering formal education in Sri Lanka is a language delay in spoken language and/or sign language compared to their age-matched hearing peers. The aim of this study was to evaluate the effectiveness of the Colourful Semantics approach as a whole-class language enrichment programme to develop the use and responses to target wh questions. Thirty primary school children who are deaf or hard-of-hearing between the ages of five-ten years were included. The programme was offered once a week for 12 weeks through the class teacher. Individual pre- and post-language measures and statistical analyses were undertaken on receptive knowledge and expressive use of the target wh questions using a picture naming task and tasks based on three local children’s story books. A statistically significant improvement was observed in the understanding of target wh questions post-intervention by all the children. There was also a positive change in the responses to the target wh questions by all the children post-intervention with many combining signs or spoken words with signs. The Colourful Semantics approach has potential as a whole-class language-teaching approach to strengthen the understanding and use of wh question forms. This study emphasizes the benefits of collaborative partnerships between speech and language therapists and teachers in delivering intervention particularly in resource-limited contexts. KEYWORDS: Deaf, children, language delay, Sri Lankan sign language, Colourful SemanticsItem The Effectiveness of a multisensory traditional storytelling programme on target vocabulary development in children with disabilities accessing English as a second language: A preliminary study(SAGE Publications, 2022) Hettiarachchi, S.; Walisundara, D.C.; Ranaweera, M.ABSTRACT: The current deliberations on increasing access to English and the democratization of English in post-war Sri Lanka must extend to students with disabilities. Research evidence from speech and language therapy promotes the use of multi-sensory stimuli to advance the development of communication and language skills in children with intellectual disabilities. In this preliminary study, 3 local children's stories, together with relevant story-making activities, were offered to 7 children with intellectual disabilities in one special school across 12 lessons. Vocabulary measures of word naming of target vocabulary were undertaken pre- and post-intervention using picture-based tasks presented via PowerPoint. A positive difference was found post-intervention on the target vocabulary naming test. The findings of this small preliminary study should be interpreted with caution. However, the findings are suggestive of the potential benefit of using culturally relevant familiar local traditional stories with a range of multi-sensory stimuli and storytelling activities to aid learning of new vocabulary in children with disabilities accessing English as an additional language. Further research using a large sample together with a control group will be required to substantiate the positive trend of vocabulary gains observed within this preliminary study. KEYWORDS: English; intellectual disability; multisensory; stories; traditional.Item Including All? perceptions of mainstream teachers on inclusive education in the Western Province of Sri Lanka(International Journal of Special Education, 2018) Hettiarachchi, S.; Ranaweera, M.; Walisundara, D.; Daston-Attanayake, L.; Das, A. K.This study aimed to uncover perceptions of 'inclusive education' using semi-structured interviews with 15 mainstream teachers from the Western Province in Sri Lanka. Thematic coding of the interview data was undertaken using the key principles of Framework Analysis. The main themes that emerged were incongruous conceptual understandings of 'inclusive education' and 'integration', discrepancies in the use of terminology, fear of incompetence, concerns regarding limited training facilities, the lack of incentives offered to work within special education settings, the pressure of working towards school examination success and the lack of policy awareness. These findings will be discussed with regard to its implications for policy and practice. The results underpin the need to consider local teacher perceptions and to address these concerns within pre-service and in-service training in order to support the establishment of education reforms of equal access for all, which are relevant and sensitive to cultural needs and considerate of local realities.Item Accessing tertiary education: in expectations and realities for student experiencing disabilities(Faculty of Graduate Studies, University of Kelaniya, 2014) Hettiarachchi, S.; Attanayake, L.D.; Ranaweera, M.; Walisundara, D.Item Story Boxes: using a multisensory story approach to develop vocabulary in children experiencing language-learning difficulties(Infonomics Society, UK, 2013) Hettiarachchi, S.; Ranaweera, M.One challenge faced by special education teachers in Sri Lanka is in the implementation of whole-class vocabulary enrichment activities. There has been a growing interest in using multisensory, interactive storytelling as a means of encouraging vocabulary development. This study aimed to evaluate the effectiveness of integrating local stories into multi-sensory story-telling and story-making activities as part of a whole-class speech and language therapy programme to assist the teaching and learning of target vocabulary. Two local children’s stories together with relevant story-telling and story-making activities were introduced to 30 children with language learning difficulties accessing special education in the south of the country. The children received weekly storytelling sessions for 3 months via trained teaching staff. Receptive and expressive vocabulary measures were undertaken before and after the introduction of the approach together with teacher and parent comments. There was a positive difference in the target receptive and expressive vocabulary of each student following the block of therapy using the Story boxes multi-sensory storytelling/story-making approach. Additional positive changes were noticed in the children’s attention and listening skills and in their motivation to attend to activities during ‘story time’. The use of local, traditional stories incorporating a multi-sensory story telling and story-making framework was found to aid the receptive and expressive vocabulary skills of children with language-learning difficulties.