Michelle Pascoe

Vowel Targeted Intervention for Children with Persisting Speech Difficulties: Impact on Intelligibility.

Compared to the treatment of consonant segments, the treatment of vowels is infrequently described in the literature on children’s speech difficulties. Vowel difficulties occur less frequently than those with consonants but may have significant impact on intelligibility. In order to evaluate the effectiveness of vowel targeted intervention (VTI) with two 10-year-old children with severe and persisting speech difficulties measures of (a) percentage vowels correct and (b) intelligibility outcomes by peer group listeners were used. Assessment of vowel production was used to design and carry out intervention for each child, the success of which was measured in two ways: comparing (a) percentage of vowels correct before and after the intervention, (b) the percentage of pre- vs. post-intervention utterances understood by a group of typical peer listeners (aged 9 to 11 years). Pre- and post-intervention speech samples (comprising single words, imitated sentences and spontaneous speech) were edited onto a CD for these listeners, who were asked to write down what had been said. The two children with speech difficulties made significant improvement in vowel production as measured by the percentage of vowels correct. The listeners perceived more productions accurately post-intervention than pre-intervention. There was also a reduction in the range of the listeners’ misperceptions of target words. VTI was effective in terms of both increasing PVC and intelligibility outcomes as judged by peer group listeners. It is not more complicated to carry out VTI than consonant targeted intervention; this should be considered more often when planning therapy for children where vowels are affected.

Masithethe: Speech and language development and difficulties in isiXhosa

IsiXhosa is the second most spoken language in South Africa and one of its official languages. Spoken mainly in the Eastern and Western Cape regions it is fitting that much of the research focusing on childrens isiXhosa speech and language acquisition has been carried out at the University of Cape Town (UCT). We describe what is known about childrens acquisition of isiXhosa, and highlight studies which inform our knowledge of the typical development of the language in relation to the acquisition of consonants including clicks and the isiXhosa noun class system. Little is known about the specific nature of speech and language difficulties in isiXhosa, and the development of isiXhosa resources for speech and language assessment and therapy is in its infancy. Suggestions are made for advancing knowledge and practice which is needed to provide a relevant and quality service to isiXhosa speakers.

Phonological development of first language isiXhosa-speaking children aged 3;0–6;0 years: A descriptive cross-sectional study

Abstract Standardized assessments of children’s isiXhosa phonology have not yet been developed and there is limited information about developmental norms in this language. This article reports on the phonological development of 24 typically developing first language isiXhosa-speaking children aged 3;0–6;0 years, in Cape Town, South Africa. The order and age of acquisition of isiXhosa phonemes, emergence and elimination of phonological processes and percentage consonants and vowels correct are described. A set of culturally and linguistically appropriate pictures was used to elicit single word responses that were recorded and transcribed. The study found that children had acquired most isiXhosa phonemes by 3;0 years although aspirated plosives, affricates, fricatives and clicks were still developing. In particular, the affricates and aspirated plosives were still developing in the 5-year-old children in this sample, suggesting that these may be the latest acquired segments. Children were able to produce basic word shapes by 3;0 years, but some of the words of 4–6 syllables were still being mastered by the 4- and 5-year-old children. Phonological processes that have been well documented for other languages were used by children in this sample (e.g. deaffrication, stopping and gliding of liquids). Findings presented for this pre-school-aged sample are related to theories of phonological acquisition to provide normative data on phonological development in isiXhosa-speaking children.

The acquisition of Setswana segmental phonology in children aged 3.0–6.0 years: A cross-sectional study

Abstract Purpose: This paper describes typical speech development of Setswana. Although there is information on Setswana phonology, very little is known about the acquisition of segmental phonology in this language. Method: An assessment tool was devised to collect speech samples from 36 first language Setswana-speaking children aged 3.0–6.0 years in the North-West Province of South Africa. This study describes the acquisition of consonants, vowels, syllable structures and phonological processes at various ages. Result: Findings indicate a relatively early acquisition of consonants, although trill /r/ continues to develop after 6.0 years, particularly in the penultimate syllable. Phonological features such as rounding develop in the later pre-school years. Findings also suggest that girls may achieve accuracy before boys. The older group of children presented with fewer phonological processes. Processes found in the speech of younger children included deletion of syllables, gliding, assimilation and simplifying complex words. Conclusion: These findings are discussed in relation to normative data from other languages, in particular to those belonging to the same language group. Knowledge of Setswana development will help Speech-Language Pathologists working with Setswana-speaking children to identify and manage phonological difficulties in this population. The results contribute to an increasing body of locally relevant information on typical phonological development.

Swahili speech development: preliminary normative data from typically developing pre-school children in Tanzania

BACKGROUND Swahili is widely spoken in East Africa, but to date there are no culturally and linguistically appropriate materials available for speech-language therapists working in the region. The challenges are further exacerbated by the limited research available on the typical acquisition of Swahili phonology. AIM To describe the speech development of 24 typically developing first language Swahili-speaking children between the ages of 3;0 and 5;11 years in Dar es Salaam, Tanzania. METHODS & PROCEDURES A cross-sectional design was used with six groups of four children in 6-month age bands. Single-word speech samples were obtained from each child using a set of culturally appropriate pictures designed to elicit all consonants and vowels of Swahili. Each childs speech was audio-recorded and phonetically transcribed using International Phonetic Alphabet (IPA) conventions. Childrens speech development is described in terms of (1) phonetic inventory, (2) syllable structure inventory, (3) phonological processes and (4) percentage consonants correct (PCC) and percentage vowels correct (PVC). RESULTS & OUTCOMES Results suggest a gradual progression in the acquisition of speech sounds and syllables between the ages of 3;0 and 5;11 years. Vowel acquisition was completed and most of the consonants acquired by age 3;0. Fricatives/z, s, h/ were later acquired at 4 years and /θ/and /r/ were the last acquired consonants at age 5;11. Older children were able to produce speech sounds more accurately and had fewer phonological processes in their speech than younger children. Common phonological processes included lateralization and sound preference substitutions. CONCLUSIONS & IMPLICATIONS The study contributes a preliminary set of normative data on speech development of Swahili-speaking children. Findings are discussed in relation to theories of phonological development, and may be used as a basis for further normative studies with larger numbers of children and ultimately the development of a contextually relevant assessment of the phonology of Swahili-speaking children.

Speech and literacy development in a child with a cochlear implant: Application of a psycholinguistic framework

This single case study describes the speech, phonological awareness and literacy of a 6;0-year-old girl with a cochlear implant. NG, a child with a congenital bilateral severe / profound hearing loss, received a monaural cochlear implant at the age of 3;0, three years prior to the study. Using a psycholinguistic framework to investigate her single word speech processing skills, we aimed to describe NG’s speech, phonological awareness and literacy in relation to norms for her chronological age, and areas of relative strength and weakness in terms of her own speech processing profile. These aims were pertinent as NG faced her first year of formal schooling in a mainstream school and for providing further targeted intervention. NG was shown to have developed age-appropriate literacy and phonological awareness skills, although her speech processing profile revealed residual difficulties with processing and production of multisyllabic words. The case study contributes to knowledge of speech processing skills in children with cochlear implants, and has clinical implications for those working with children with cochlear implants and their families.

Beyond lip service: Towards human rights-driven guidelines for South African speech-language pathologists

Abstract Developed with a strong awareness of past injustices, South Africa’s progressive constitution emphasises a full spectrum of human rights. While the constitution celebrates many languages and cultures, speech-language pathologists (SLPs) face challenges in translating these values into practice with a diverse clientele. Similarly, Article 19 of the Universal Declaration of Human Rights focuses on freedom of expression in one’s language of choice, but is often perceived as a “Cinderella” right (i.e. one that is frequently neglected). This paper presents a literature review undertaken in association with the Health Professions Council of South Africa to produce guidelines to support SLPs in their practice with diverse linguistic and cultural groups. The aim was to identify key points for inclusion in a set of human rights-driven guidelines. Specific objectives were to critique: (1) current guidelines for SLPs working with diverse cultural and linguistic groups; and (2) equivalent guidelines for related professions. Content analysis of the datasets revealed key themes which formed the basis of an initial skeleton, to be further developed through a consultative process and discussion, ultimately aiming to provide supportive, practical guidelines to better equip South African SLPs to serve all the people of the country.

Speech processing and production in two-year-old children acquiring isiXhosa: A tale of two children

We investigated the speech processing and production of 2-year-old children acquiring isiXhosa in South Africa. Two children (2 years, 5 months; 2 years, 8 months) are presented as single cases. Speech input processing, stored phonological knowledge and speech output are described, based on data from auditory discrimination, naming, and repetition tasks. Both children were approximating adult levels of accuracy in their speech output, although naming was constrained by vocabulary. Performance across tasks was variable: One child showed a relative strength with repetition, and experienced most difficulties with auditory discrimination. The other performed equally well in naming and repetition, and obtained 100% for her auditory task. There is limited data regarding typical development of isiXhosa, and the focus has mainly been on speech production. This exploratory study describes typical development of isiXhosa using a variety of tasks understood within a psycholinguistic framework. We describe some ways in which speech and language therapists can devise and carry out assessment with children in situations where few formal assessments exist, and also detail the challenges of such work.

Intervention for bilingual speech sound disorders: A case study of an isiXhosa–English-speaking child

Background Bilingualism is common in South Africa, with many children acquiring isiXhosa as a home language and learning English from a young age in nursery or crèche. IsiXhosa is a local language, part of the Bantu language family, widely spoken in the country. Aims To describe changes in a bilingual child’s speech following intervention based on a theoretically motivated and tailored intervention plan. Methods and procedures This study describes a female isiXhosa–English bilingual child, named Gcobisa (pseudonym) (chronological age 4 years and 2 months) with a speech sound disorder. Gcobisa’s speech was assessed and her difficulties categorised according to Dodd’s (2005) diagnostic framework. From this, intervention was planned and the language of intervention was selected. Following intervention, Gcobisa’s speech was reassessed. Outcomes and results Gcobisa’s speech was categorised as a consistent phonological delay as she presented with gliding of/l/in both English and isiXhosa, cluster reduction in English and several other age appropriate phonological processes. She was provided with 16 sessions of intervention using a minimal pairs approach, targeting the phonological process of gliding of/l/, which was not considered age appropriate for Gcobisa in isiXhosa when compared to the small set of normative data regarding monolingual isiXhosa development. As a result, the targets and stimuli were in isiXhosa while the main language of instruction was English. This reflects the language mismatch often faced by speech language therapists in South Africa. Gcobisa showed evidence of generalising the target phoneme to English words. Conclusions and implications The data have theoretical implications regarding bilingual development of isiXhosa–English, as it highlights the ways bilingual development may differ from the monolingual development of this language pair. It adds to the small set of intervention studies investigating the changes in the speech of bilingual children following intervention. In addition, it contributes to the small amount of data gathered regarding typical bilingual acquisition of this language pair.

The Prevalence of Speech and Language Disorders in French-Speaking Preschool Children From Yaoundé (Cameroon)

Purpose The purpose of this study was to determine the prevalence of speech and language disorders in French-speaking preschool-age children in Yaoundé, the capital city of Cameroon. Method A total of 460 participants aged 3-5 years were recruited from the 7 communes of Yaoundé using a 2-stage cluster sampling method. Speech and language assessment was undertaken using a standardized speech and language test, the Evaluation du Langage Oral (Khomsi, 2001), which was purposefully renormed on the sample. A predetermined cutoff of 2 SDs below the normative mean was applied to identify articulation, expressive language, and receptive language disorders. Fluency and voice disorders were identified using clinical judgment by a speech-language pathologist. Results Overall prevalence was calculated as follows: speech disorders, 14.7%; language disorders, 4.3%; and speech and language disorders, 17.1%. In terms of disorders, prevalence findings were as follows: articulation disorders, 3.6%; expressive language disorders, 1.3%; receptive language disorders, 3%; fluency disorders, 8.4%; and voice disorders, 3.6%. Conclusion Prevalence figures are higher than those reported for other countries and emphasize the urgent need to develop speech and language services for the Cameroonian population.