Journal of Fluency Disorders最新文献

Purpose

This study examined the language skills and the type and frequency of disfluencies in the spoken narrative production of typically developing Spanish-English bilingual children.

Method

A cross-sectional sample of 106 bilingual children (50 boys; 56 girls) enrolled in kindergarten through Grade 4, produced a total of 212 narrative retell language samples in English and Spanish. A specialized fluency coding system was implemented to index the percentage of total (%TD) and stuttering-like disfluencies (%SLD) in each language. Large-scale reference databases were used to classify children’s dual language proficiency profiles (balanced, English dominant, Spanish dominant) based on language sample analysis measures of morphosyntax and lexical diversity.

Results

The bilingual Spanish-English children in this study did not demonstrate significant cross-linguistic differences for mean %TD or %SLD. However, the mean %TD and %SLD in both languages exceeded the risk threshold based on monolingual English-speaking norms. English dominant bilingual children demonstrated significantly lower %TD in English than Spanish. Spanish dominant children demonstrated significantly lower %SLD in Spanish than English.

Conclusions

This study included the largest sample size of bilingual Spanish-English children investigated to date from a fluency perspective. The frequency of disfluencies was found to be variable across participants and change dynamically as a function of grade and dual language proficiency profiles, indicating the need for studies that employ larger sample sizes and longitudinal designs.

The experience of stuttering is wide ranging and includes a variety of perceived and unperceived behaviors and experiences. One of those experiences is anticipation of stuttering. While anticipation of stuttering is commonly discussed in terms of being a prediction of an upcoming event, it has also been equated to an internal realization of stuttering – which is the conceptualization applied here. The aim of this paper is to impress upon the reader that anticipated moments of stuttering (whether at a conscious or subconscious level) must be met with an adaptive reaction or response (which may also occur consciously or subconsciously). While these adaptive reactions and responses may differ based on whether they promote positive or negative communicative behaviors, they still represent adaptations by the speaker. Among the broad category of reactions and responses to anticipation of stuttering are motoric adaptations to speech, which include characteristic stuttering behaviors and other adaptations that may contribute to speech that is perceived by listeners as fluent. An outcome of this conceptualization is, even when adaptations result in listener perceived fluency, the speech of the person who stutters is still controlled by stuttering – meaning that some observable or unobservable adaptation is required. It is critical that speech-language pathologists recognize that the behaviors of people who stutter may reflect reactions and responses to an internal realization of stuttering and observable and unobservable reactions and responses must be considered in both assessments and interventions.

Purpose

This study uses the Simplified Chinese version of the Overall Assessment of the Speaker’s Experience of Stuttering for Adults (OASES-A-SC) to examine the stuttering experience of people in China and determine if there are differences between the data collected in China and other countries.

Methods

A total of 139 responses to the OASES-A-SC were collected in an online self-help community of people in China who stutter. Descriptive analyses were conducted to obtain the understanding of how stuttering impacts the life experience of people in China who stutter. Comparisons were conducted regarding the groups of gender, highest education, and therapy history. Cross-cultural comparisons among the data collected from China, Australia, the Netherlands, Japan, Sweden, and the USA were also conducted.

Results

The data for the OASES-A-SC showed a skewed distribution toward the severe end of the OASES-A impacting scale. About 93.5% participants rated the overall impact of stuttering on their life at and above the “Moderate” category. The mean scores of the General Information, Reaction to Stuttering, and Qualify of Life sections fell in the moderate-to-severe category. Compared with the data in other five countries, the Chinese data were significantly higher in the impact severity level.

Conclusion

The results showed that people in China who stutter have more adverse experiences related to stuttering compared with their counterparts in western or developed countries. Higher negative attitudes toward stuttering in China, social stigma against people with disabilities, and the fewer professional supports were discussed to be associated with this more adverse experience. Cultural differences such as a greater power distance and higher collectivism in Chinese culture were considered to be associated with the elevated level of adverse impact of stuttering in China.

Purpose

Available studies of working memory (WM) in speakers who stutter tend to rely on parent report, focus on phonological WM, or measure WM in combination with other processes. The present research aimed to: (1) compare complex WM in adults who stutter (AWS) and adults who do not stutter (AWNS); (2) characterize group performance patterns; and (2) determine whether WM predicts stuttering severity.

Methods

Eighteen AWS and 20 AWNS completed parallel verbal and spatial span tasks in which to-be-remembered items were interleaved with a distracting task across varying set sizes. Dependent variables included the number of correctly recalled items, accuracy on distraction tasks, and detailed analyses of item-level responses. We further examined whether span scores predicted subjective and objective measures of stuttering severity.

Results

Relative to AWNS, AWS showed poorer recall, specifically on short set sizes in the spatial task. Groups performed similarly on distraction tasks and showed comparable error patterns. Predictive relationships differed by span task and severity measure. Lower verbal span scores predicted greater stuttering impact and more overt stuttering behaviors; lower spatial span scores predicted lower impact and was unrelated to overt behaviors.

Conclusions

Findings suggest that AWS differ subtly from AWNS in WM performance. Group differences became more apparent under certain task conditions but could not be attributed to specific underlying processes. Data further indicated a complex relationship between WM and stuttering severity. Overall, results corroborate previous studies linking stuttering to domain-general weaknesses, but highlight the need for additional research to clarify the nature of this relationship.

Purpose

We sought to investigate the effects of cued attentional shifts on speechmotor control in adults who stutter (AWS) and adults who do not stutter (ANS) when speaking under low and high social stress conditions.

Method

Thirteen AWS’ and 10 ANS’ lip aperture (LA) and posterior tongue (PT) movements were assessed under a Cued-Internal and Cued-External attentional focus condition with and without social stress induction (i.e. speaking to an audience). Skin conductance levels were used to measure a stress response. Speech motor control was assessed by measuring movement duration and variability of movement for LA and PT using the spatial temporal index (STI).

Results

A significant Group x Condition interaction was found for LA STI. Post-hoc comparisons indicated AWS’ LA STI significantly decreased under Cued External Focus conditions during both low and high social stress. No significant Group x Condition interaction was found for PT STI. AWS showed significantly slower tongue movements (PT) across all low and high social stress conditions; however, there was no significant Group x Condition interaction for PT or LA.

Discussion

Findings yield preliminary insights into the role of attentional focus on speech motor control when speaking during high social stress. Theoretical and clinical implications are discussed

Background

Prior research has shown that stuttering is a complex and individualized condition. The Overall Assessment of the Speaker’s Experience of Stuttering (OASES; Yaruss & Quesal, 2016) is a well-researched tool that measures the impact of stuttering on an individual's life. This study has used the Polish version of the OASES to examine the experience of stuttering among Polish people who stutter.

Method

The original, English version of the OASES was translated into Polish. Reliability and validity for the Polish version were evaluated. Comparisons were made between samples from Poland and the United States for all of the sections and for the overall results of the OASES-S, OASES-T, and OASES-A. To explore the structure of the stuttering experience, a factor structure of the OASES was conducted.

Results

Like other versions of the OASES, the OASES-Polish (OASES-PL) demonstrated good reliability and validity. Cross-cultural comparisons have shown that Polish school-age children had significantly lower knowledge and awareness of stuttering than children in the United States (USA). Factor analysis further revealed that the structure of the experience of stuttering is similar across all age groups, but the importance of the particular aspects of stuttering varies at different stages of life.

Conclusion

The OASES-PL is a reliable and valid instrument for measuring the impact of stuttering on Polish people who stutter and can therefore be used as a clinical tool. Polish results were relatively similar to those from the USA, though there were subtle cross-cultural differences that are worthy of further exploration.

Educational objectives

After reading the article, the participant will be able: (1) to describe the diverse experiences of Polish people who stutter at different ages, (2) to explain the importance of quality of life analysis in diagnosis and speech therapy with people who stutter, and (3) to explain the breadth of the stuttering phenomenon among Polish individuals who stutter.

Purpose

The purpose of this study was to investigate the frequency and types of disfluencies in Greek-English bilingual adults across naturalistic speech samples and compare frequency and types of disfluencies between the participants’ L1 and L2.

Methods

Participants in the study included 26 Greek-English bilingual young adults. All participants were sequential bilinguals, whose first language was Greek and second language was English. Two speech samples were collected in each language, a conversational and a narrative sample, which were subsequently analyzed for the frequency and types of disfluencies.

Results

Results indicated that participants produced more typical disfluencies in English compared to Greek across speaking samples. The most frequent types of disfluencies were filled pauses and vowel prolongations (without tension or struggle) across speaking samples and languages.

Conclusion

Our results revealed differences in the types and frequencies of disfluencies produced in participants’ native compared to their second language. Results add to the growing body of literature addressing the manifestation of speech disfluencies in bilingual speakers.

Purpose

Speaking with an external rhythm has a tremendous fluency-enhancing effect in people who stutter. The aim of the present study is to examine whether syllabic timing related to articulatory timing (c-center) would differ between children and adolescents who stutter and a matched control group in an unpaced vs. a paced condition.

Methods

We recorded 48 German-speaking children and adolescents who stutter and a matched control group reading monosyllabic words with and without a metronome (unpaced and paced condition). Analyses were conducted on four minimal pairs that differed in onset complexity (simple vs. complex). The following acoustic correlates of a c-center effect were analyzed: vowel and consonant compression, acoustic intervals (time from c-center, left-edge, and right-edge to an anchor-point), and relative standard deviations of these intervals.

Results

Both groups show acoustic correlates of a c-center effect (consonant compression, vowel compression, c-center organization, and more stable c-center intervals), independently of condition. However, the group who stutters had a more pronounced consonant compression effect. The metronome did not significantly affect syllabic organization but interval stability improved in the paced condition in both groups.

Conclusion

Children and adolescents who stutter and matched controls have a similar syllable organization, related to articulatory timing, regardless of paced or unpaced speech. However, consonant onset timing differs between the group who stutters and the control group; this is a promising basis for conducting an articulatory study in which articulatory (gestural) timing can be examined in more detail.

Purpose

Speech and language therapy is a growing profession in Sri Lanka, and little is known about how stuttering is currently managed in the country. Therefore, this study aimed to investigate the current stuttering management practices in Sri Lanka and to investigate any barriers to service provision.

Method

A convergent mixed methods design was employed across two phases. Sixty-four Sri Lankan speech and language therapists (SALTs) participated in online surveys in phase one and ten participated in semi structured interviews in phase two. Survey data in phase one was analysed using descriptive statistics and data in phase two was analysed using thematic analysis. Results from both phases were triangulated for the overall interpretation of the data.

Results

Sri Lankan SALTs conduct a comprehensive assessment, however some assessment contexts (e.g., stuttering beyond the clinic) were not routinely considered. Speech and language therapists reported using multiple and varied intervention approaches/strategies, which were often adapted and/or combined. It was noted that the delivery of treatment was more challenging. Barriers identified were including limited knowledge of some aspects of stuttering management, limited access to resources, and workplace constraints.

Conclusion

Overall, findings revealed that most Sri Lankan SALTs employ a comprehensive and holistic approach in assessment; however, some limited knowledge of the disorder and intervention was identified. Findings highlighted the need for further training for SALTs regarding the management of stuttering, the need for culturally and linguistically validated appropriate assessments as well as the need to consider logistical issues in clinical settings and service delivery.

Adult conversational recasts are based on child platform utterances that contain errors (e.g., Child: “Me going.” Adult: “Yes, you are going”), and recasts are effective in the child language literature. For many years, adult recasts of preschoolers’ stuttered utterances were surmised as fluency-facilitating, but to date, no evidence has been reported to support their efficacy. The purpose was to investigate the natural occurrence of, and the fluency-facilitating potential of, recasts produced by caregivers and clinicians/examiners in free-play interactions transcribed from audio or video recordings on FluencyBank. Forty-three participants with a median age of 38 mo (3;2) (Range=28–73 mo), including 32 boys and 11 girls were selected from five databases, and recasts which were near-imitations and simple recasts as per Weiss (2002) were identified. One database chosen was the Illinois project, to include a subgroup of persistent (n = 9) and recovered children (n = 9). In the 43 participants, significantly (p < 0.0001) fewer stutters and lower percent syllables stuttered (%SS) were observed in post-recast utterances (4%SS) as compared to post-nonrecast utterances (12.5%SS). The CWS-persistent subgroup (n = 9) did not fit the group trend of the 34 others who significantly differed in stuttering frequency post-nonrecast versus postrecast. Findings are taken to mean that adult conversational recasts of preschoolers’ stuttered utterances are fluency-facilitating, and interpretations are addressed.