www.e-gagueira.com.br - Abstract 2026 agosto a dezembro

Abstract - Agosto a Dezembro de 2026

A pragmatic pilot study of school speech-language pathologist delivery of the Lidcombe Program via telepractice - INFANTIL / TERAPIA

Int J Speech Lang Pathol. 2026 Aug 20:1-13.

Shane Erickson et al

La Trobe University, Bundoora, Victoria, Australia; The University of Melbourne, Victoria, Australia; Melbourne Archdiocese Catholic Schools (MACS), East Melbourne, Victoria, Australia.

Purpose: While evidence supports use of the Lidcombe Program for school-age children who stutter, accessing treatment can be problematic. Telepractice could overcome service barriers, yet scarce research has investigated telepractice delivered Lidcombe Program by school speech-language pathologists.

Method: In this pragmatic pilot study, 16 school-age children (6;1-11;2) received the Lidcombe Program via telepractice at home or school by one of five offsite speech-language pathologists. Independent speech data were collected before treatment and nine months after commencing treatment. Additionally, data regarding parent satisfaction and perspectives were collected.

Result: After nine months of treatment, speech data were collected from 10 of the 16 children, five of whom had already met criteria for entry to Lidcombe Program Stage 2. The remaining six children withdrew prior to this data-point. Significant group reductions in percentage of syllables stuttered (p = .05) and severity ratings (p = .05) were achieved, however should be interpreted with caution given varied participant treatment response. Parents reported that telepractice was convenient, increased access, and did not negatively impact the speech-language pathologists' therapeutic relationship.

Conclusion: Reductions in stuttering, along with positive parent reports, mean telepractice delivered Lidcombe Program by school speech-language pathologists can be effective for some children while overcoming access barriers.

PMID: 42623248

Altered gray matter network segregation and disrupted interregional connectivity in children with persistent developmental stuttering: a graph-theoretical morphometric study

Brain Imaging Behav. 2026 Aug 29;20(5):125.

Wanqing Liu et al

Sichuan University, Chengdu, China; The Fourth People's Hospital of Chengdu, Chengdu, China.

Developmental stuttering is a neurodevelopmental speech disorder characterized by speech disfluency and variable persistence into adolescence. While white matter and functional connectivity abnormalities have been widely reported, the topological organization of gray matter (GM) networks in affected children remains unclear. This study investigated GM morphological network alterations in children with persistent developmental stuttering (CWS) and examined their relationships with stuttering severity. Thirty-three CWS and thirty age- and sex-matched healthy controls underwent T1-weighted MRI. Individual GM morphological networks were constructed using Kullback-Leibler divergence of voxel-based morphometry data across 90 brain regions. Graph-theoretical analyses quantified global and local topological properties, and network-based statistics (NBS) were used to identify alterations in morphological connectivity. Both groups exhibited small-world topology; however, CWS showed significantly higher clustering coefficient(Cp), local efficiency (Eloc), and modularity (Q) (P < 0.05), indicating a hyper-segregated GM organization. NBS revealed reduced morphological connectivity within a subnetwork encompassing the default mode, sensorimotor, basal ganglia-thalamic, and visual regions. Greater network segregation (Cp, Eloc, Q) was positively correlated with stuttering severity, whereas reduced subnetwork connectivity was negatively correlated with stuttering severity (FDR-corrected P < 0.05). These findings suggest that children with persistent stuttering exhibit excessive local specialization and decreased interregional integration, reflecting a network-level imbalance that may underlie the persistence and severity of stuttering. Altered GM network topology may represent a potential neurostructural biomarker for early identification and targeted intervention.

PMID: 42667480

Clarifying neurodiversity-affirming frameworks in stuttering - Letter to the Editor - TERAPIA

J Fluency Disord. 2026 Aug 7:89:106238.

Yan Ma et al

Purdue University Fort Wayne, Fort Wayne, USA; Fort Hays State University, Hays, USA; Duquesne University, Pittsburgh, USA; Florida State University, Tallahassee, USA; Michigan State University, East Lansing, USA

This letter responds to recent characterizations of neurodiversity-affirming and anti-ableist frameworks in stuttering in Vanryckeghem's (2026) position paper. We argue that these frameworks do not reject speech-related goals, intervention, or evidence-based practice. Rather, they question whether apparent fluency should function as the default marker of therapeutic success and emphasize outcomes such as participation, communicative agency, identity, and wellbeing. We also distinguish client-defined speech change from compulsory normalization and call for greater precision in representing neurodiversity scholarship, treatment goals, and the role of norms in stuttering care.

PMID: 42570413

Code-switching in Cantonese-English bilingual adults who stutter - LINGUAGEM

J Fluency Disord. 2026 Sep:89:106239.
Full Text: https://www.sciencedirect.com/science/article/pii/S0094730X26000471?via%3Dihub

Yunyi Hu et al

The Chinese University of Hong Kong, Hong Kong, China

Purpose: Code-switching is a common phenomenon in bilinguals, but its study in the context of bilinguals who stutter (BWS) remains limited. This preliminary study aims to investigate whether code-switching behaviors contribute to the moment of stuttering in adult bilinguals who stutter.

Method: 23 Cantonese-English bilingual adults who stutter participated in the study. Natural conversational speech was elicited through a standardized series of questions. The utterances were categorized into 4 types: fluent Cantonese only, stuttered Cantonese only, fluent code-switched utterance and stuttered code-switched utterances.

Results: The results showed that 78% of the utterances contained code-switching, all of which was intrasentential code-switching. Stuttering was statistically more likely to occur in code-switched utterances than in Cantonese-only utterances. Within code-switched stuttered utterances, 90.57% of stuttering moments occurred in Cantonese words and only 9.43% in English words that were code-switched.

Conclusion: Stuttering was more likely to occur in code-switched utterances than in Cantonese-only utterances. Interestingly, stuttering is predominantly associated with the base language, Cantonese, and not with the switch points (English), indicating increased cognitive-linguistic demands during speech planning, not just during production.

PMID: 42603499

Comparison of diadochokinesis in Kannada-speaking adults who do and do not stutter - FALA

Int J Speech Lang Pathol. 2026 Sep 2:1-12.

Free Text: https://www.tandfonline.com/doi/epdf/10.1080/17549507.2026.2716264?needAccess=true

Clarine Maria Thomas et al

Manipal Academy of Higher Education, Manipal, India; Gallaudet University, Washington, DC, USA

Purpose: In the context of limited understanding of the objective measurement of diadochokinesis in adults with stuttering, the study aimed to compare the oral diadochokinetic and laryngeal diadochokinetic rates between adults who stutter and adults who do not stutter. The study further examined the effect of lexicality (real words vs. non-words) in oral diadochokinetic tasks.

Method: Using Praat software, oral (oral diadochokinetic rate, consonant-vowel duration, and inter-syllabic duration) and laryngeal diadochokinetic rates were examined among 35 adults who stutter and 35 age- and gender-matched adults who do not stutter. Further, the effect of stimuli (real word vs. non-word) during oral diadochokinetic tasks was also examined.

Result: Significant differences were noted between groups for monosyllabic oral and laryngeal diadochokinetic rates, but not during bi- and tri-syllabic diadochokinetic tasks, suggesting potential differences in speech-motor control between the groups. There was no significant difference between groups in consonant-vowel duration and inter-syllabic duration. In contrast to adults who do not stutter groups, a significant difference was observed with adults who stutter producing bi-syllabic real words faster than the non-words.

Conclusion: The present study emphasises the importance of using the dual diadochokinetic protocol (oral and laryngeal diadochokinetic), incorporating both real and non-word oral diadochokinetic tasks during clinical evaluations.

PMID: 42687393

Differences in dynamic motor selection in stuttering - PSICOMOTOR

Curr Biol. 2026 Aug 3;36(15):3983-3989.e4. Epub 2026 Jul 15.

Irene Echeverria-Altuna et al

University of Oxford, Oxford, UK; Yale University, , New Haven, USA; Brain and Language (BCBL), Gipuzkoa, Spain.

Free article: https://www.cell.com/current-biology/pdfExtended/S0960-9822(26)00805-5

Stuttering involves interruptions to the smooth flow of speech occurring mostly at syllable onset.
1 Speech fluency is enhanced in people who stutter (PWS) by external timing cues.
2 This has been taken to indicate that difficulties in the temporal organization of action selection and initiation during speech contribute to stuttering.
3 An important unanswered question is whether putative temporal coordination difficulties are specific to speech or generalize to other actions.
Here, we examined the temporal organization of hand-action selection in PWS. Twenty PWS and twenty typically fluent speakers (TFS) underwent magnetoencephalography (MEG) recording while performing a visuomotor working-memory task that encouraged temporally specific selection, preparation, and shifts between hand actions. Lateralized sensorimotor mu/beta-frequency (8-30 Hz) activity modulation accompanying hand-action prioritization was weaker in PWS than TFS. Strikingly, this effect was specific to a period of high uncertainty regarding which action to select and when. Despite these differences, lateralized mu/beta modulation was functionally related to reaction times in both groups and reaction times were well matched between PWS and TFS. The findings suggest a general disruption of temporal structuring of action selection and preparation in stuttering.

PMID: 42456659 DOI: 10.1016/j.cub.2026.06.059

Drug-induced stuttering following serotonin reuptake inhibitors treatment: About two case reports and literature review - GAGUEIRA ADQUIRIDA

Encephale. 2026 Aug 31:S0013-7006(26)00162-4.

Frank Lach et al

Établissement public de santé Alsace Nord (EPSAN), Brumath, France; Centre hospitalier d'Erstein, Erstein, France.

No abstract available

PMID: 42674890

Effects of anodal transcranial direct current stimulation over the right primary motor cortex on a sequential motor finger tapping task in developmental stuttering - PSICOMOTOR

J Fluency Disord. 2026 Sep:89:106240.

Full Text: https://www.sciencedirect.com/science/article/pii/S0094730X26000483?via%3Dihub

Cindy Nguyen et al

University of Toronto, Toronto, Ontario, Canada; The Hospital for Sick Children, Toronto, Ontario, Canada.

Introduction: This study investigates the impact of anodal transcranial direct current stimulation (tDCS) on non-speech sequential motor practice in adults who stutter (AWS), compared to non-stuttering controls (ANS). Recent research has explored the effects of tDCS on speech fluency in stuttering. However, its effect on non-speech motor tasks has not yet been studied.

Methods: 20 AWS and 30 ANS right-handed participants were randomly assigned to anodal or sham tDCS conditions, performing a sequential finger tapping task. We targeted over the right primary motor cortex, stimulating at 2 mA for 20 min. Sequence duration and reaction time were analyzed.

Results: AWS analysis revealed that the anodal condition had significantly slower reaction times in the second half of the task compared to sham. For sequence durations, AWS in the anodal condition had slower overall sequence durations than the sham condition. However, there were no block-by-block differences in sequence duration. When comparing AWS and ANS, no significant differences were observed for sequence duration. However, there were significant differences in reaction time between AWS and ANS, specifically in earlier blocks. Additionally, there was no significant Group × Condition interaction.

Discussion: The findings suggest that anodal stimulation impeded finger sequencing in AWS, showing overall slower sequence durations and a diminishing effect on reaction times in the second half of the experiment, suggesting anodal tDCS may interact uniquely with the neural mechanisms in stuttering. Future studies should explore the effects of anodal tDCS on non-speech motor tasks to gain a broader understanding of its impact on motor control and motor learning.

PMID: 42624035

Extended Clinical Follow-Up and Long-Term Stuttering Outcomes: A 24-Month Observational Study - TERAPIA

Healthcare (Basel). 2026 Aug 17;14(16):2576.
Free Article: https://pmc.ncbi.nlm.nih.gov/articles/PMC13512383/pdf/healthcare-14-02576.pdf

Abdulaziz Almudhi

King Khalid University, Abha, Saudi Arabia.

Background: Relapse following successful stuttering treatment is a common clinical challenge, yet strategies to support long-term stability after therapy termination remain insufficiently examined. We examined whether sustained clinical follow-up, without additional therapy, was associated with maintenance of treatment gains and a low incidence of relapse in adults who stutter after completion of therapy.

Methods: In this prospective longitudinal study, 40 adults who stutter completed structured treatment and entered post-treatment follow-up. Nineteen completed 24 months of monthly monitoring, involving a monthly self-rated five-point Speech Satisfaction Rating Scale (SSRS) to track perceived speech satisfaction and to detect relapse, defined a priori as a sustained decline in satisfaction relative to the post-treatment rating. No additional therapy was provided during follow-up.

Results: Across the 24-month follow-up period, one participant (5.3%) met the predefined criterion for sustained relapse; six participants (32%) showed a transient two-point decline in satisfaction at one or more follow-up points, which had resolved by 24 months in all but one. Speech satisfaction increased significantly from pre-treatment to post-treatment (p < 0.001) and remained significantly higher at 24 months compared with pre-treatment levels (p < 0.001). Although a modest reduction in speech satisfaction was observed at 12 months (p = 0.048), no significant difference was found between post-treatment and 24-month follow-up scores (p = 0.109). Longitudinal analysis demonstrated a significant effect of time on speech satisfaction (p < 0.001), with no significant effects of age or gender.

Conclusions: Sustained clinical follow-up without additional therapy was associated with long-term maintenance of self-rated speech satisfaction and a low incidence of sustained relapse over 24 months. These findings suggest that structured follow-up may be a useful component of relapse monitoring in stuttering management, although the single-group design and reliance on a single self-report measure limit causal interpretation.

PMID: 42651344

From Underrepresentation to Inclusion: Women Who Stutter in Research and Practice - TERAPIA

J Speech Lang Hear Res. 2026 Aug 25:1-10.

Ran An et al

Fort Hays State University, KS; Edith Cowan University, Perth, Western Australia, Australia; Georgia State University, Atlanta, Karolinska Institutet, Stockholm, Sweden.

Purpose: Women who stutter have historically received limited analytic attention in stuttering research and clinical practice. Although the higher male-to-female persistence ratio partly shapes sample composition, repeated reliance on male-majority samples has also contributed to a sex-skewed evidence base, limiting insight into women's experiences and clinical needs. Using a biopsychosocial framework, this article identifies key domains for inquiry and proposes a research, clinical, and educational agenda to address the underrepresentation of women who stutter and its implications for evidence generation, care, and professional training.

Method: This agenda-setting viewpoint draws on evidence from stuttering-specific and broader interdisciplinary literature and organizes it within a biopsychosocial framework. It examines how study design, analytic practices, and reporting conventions have shaped the visibility of women in the stuttering evidence base and identifies priorities for research, clinical practice, and professional education.

Results: The analysis identifies a sex-skewed evidence base shaped by male-majority samples and the frequent pooling of data from women and men. Emerging evidence suggests that biological, psychological, social, and communication-related factors may shape women's experiences of stuttering in clinically meaningful ways. Accordingly, this viewpoint identifies three areas for action: (a) strengthen the evidence base through multidimensional research and sex- and gender-informed study design, analysis, and reporting; (b) advance individualized, gender-sensitive clinical care; and (c) integrate sex- and gender-informed content into professional education and development.

Conclusions: Explicitly examining women who stutter as a distinct analytic group can strengthen the scientific foundation of speech-language pathology and enable empirical clarification rather than presupposition. This article aimed to support a more representative, clinically informative, and sex- and gender-informed evidence base regarding women who stutter.

PMID: 42640849

Is covert articulation impaired in developmental stuttering? - FALA

J Fluency Disord. 2026 Sep:89:106241.

Amélie Van Thorre et al

Psychological Sciences Research Institute, Université catholique de Louvain, Belgium; Institute of Neuroscience, Université catholique de Louvain, Belgium.

Adults who stutter (AWS) have been reported to show difficulties in nonword repetition tasks, where covert articulation supports the maintenance of phonological information during the retention interval. However, it remains unclear whether these difficulties reflect impaired covert articulation, auditory-phonological encoding, overt articulation, or aspects of executive function/attention. It is also unknown whether such difficulties characterize any, some, most, or all AWS. To address these questions, we administered spoken and written versions of a phonological memory task-both using printed nonwords during encoding-alongside a visuospatial memory task, to twenty AWS and forty matched controls, and conducted both group-level and individual-level analyses. As a group, AWS underperformed controls on all three tasks, but their difficulties were more pronounced on the two phonological tasks, suggesting impaired covert articulation. However, substantial heterogeneity emerged at the individual level, highlighting the importance of individual-level analyses and conclusions.

PMID: 42612606

Living effectively with stuttering: Narratives from voices of past and present as client-based evidence - TERAPIA

J Fluency Disord. 2026 Sep:89:106244.

Ladan Khoshbin et al

Binghamton University, United States

This study explored how people who stutter define and experience recovery, aiming to understand what it means to "live effectively with stuttering" and to evaluate personal narratives as client-based evidence. Using narrative inquiry and thematic analysis, 30 publicly available recovery narratives from SLPs who stutter were analyzed. Narratives were drawn from ASHA convention panels (1996-2019) and examined holistically to identify shared themes and insights. Six themes captured the core dimensions of recovery: (1) the emotional and cognitive work of acceptance, (2) claiming voice through disclosure and visibility, (3) the lifelong and nonlinear nature of living with stuttering, (4) challenging dominant fluency-centered paradigms, (5) the healing power of relationships, and (6) therapy as a co-narrative process. Participants emphasized identity, resilience, and communicative agency over fluency. For this population, living effectively with stuttering was defined not by producing fluency, but by empowerment, authenticity, and connection. These narratives support a paradigm shift toward narrative-informed, client-centered therapy that values lived experience as valid clinical evidence.

PMID: 42624036

Longitudinal case study of syntactic, lexical and articulation rate development at stuttering onset in a young Japanese child - INFANTIL / LINGUAGEM

J Fluency Disord. 2026 Sep:89:106242.

Free Text: https://www.sciencedirect.com/science/article/pii/S0094730X26000501?via%3Dihub

Saburo Takahashi et al

Fuchu-daiichi Elementary School, Fuchu-shi, Tokyo, Japan; Tokyo Gakugei University, Koganei-shi, Tokyo, Japan; University of Tsukuba, Tsukuba-shi, Ibaraki, Japan.

Purpose: This study investigated the relationship between syntactic, lexical and articulation rate development and the onset of stuttering in a young Japanese child from the pre-onset stage. We also examined the linguistic factors influencing stuttering-like disfluency (SLD) immediately after stuttering onset.

Methods: The case was a female child aged 1 year 11 months at the beginning of the study. Twenty free-play sessions were video-recorded over approximately two years and four months to analyze SLD, physical concomitants, predicate-argument structures, mean length of utterances (MLU), lexical diversity (VocD), and articulation rate. The influence of sentence-level factor (utterance length), and word-level factors (bunsetsu length, and syllable weight) on SLD was also assessed immediately after onset.

Results: SLD frequency was near zero until the sixth session, and prior to the emergence of predicate-argument structures, SLDs were rarely observed. Stuttering onset occurred two days before the seventh session, at which point SLD frequency increased rapidly alongside the appearance of physical concomitants. During this period, predicate-argument structures and VocD values increased sharply, though MLU and articulation rate did not. Additionally, no significant influences of utterance length, bunsetsu length , and syllable weight were observed immediately after onset.

Conclusions: Our findings suggest that, at least for the present case, rapid syntactic and lexical development can be associated with stuttering onset. Furthermore, the results imply that selected sentence- and word-level factors might not influence the occurrence of stuttering immediately after onset in this case.

PMID: 42603498

Motor control: Muted motor prioritization in stuttering - PSICOMOTOR

Comment Curr Biol. 2026 Aug 3;36(15):R845-R847.

Nicole E Neef

University Medical Center Göttingen, Germany.

Mu/beta rhythms over sensorimotor cortex reflect motor control dynamics. A new study shows that these rhythms track how the brain prioritizes hand action plans as they shift over time, and that this prioritization is weaker in people who stutter.

PMID: 42546674 DOI: 10.1016/j.cub.2026.06.055

Network Models for Assessing the Co-occurrence Between Stuttering and ADHD - ATENÇÃO

Int J Lang Commun Disord. 2026 Sep-Oct;61(5):e70320.
Free Text: https://pmc.ncbi.nlm.nih.gov/articles/PMC13489026/pdf/JLCD-61-0.pdf

Fjorda Kazazi et al

University College London, London, UK.

Background and aims: Previous studies have indicated that people who stutter (PWS) and people with ADHD (PWADHD) show similar cognitive profiles, implying a link between the two neurodevelopmental profiles. This study examined the relationship between stuttering and ADHD and investigated the extent of this similarity using Network Models (NMs).

Methods and procedures: Neurotypical participants (people who did not stutter and did not have ADHD; N = 67), PWADHD (N = 79) and PWS (N = 33) were assessed for stuttering, ADHD traits, and phonological working memory (PWM). Lower PWM is associated with many conditions including stuttering and ADHD.

Outcomes and results: NM analysis revealed differences in cognitive networks (fluency, attention and PWM) between participant groups. The findings suggest partially different cognitive architectures across participant groups indicating that stuttering and ADHD do not share a common underlying mechanism. There were marked differences between participant groups in the way that traits of attention, stuttering, and PWM linked with each other which emphasises partially unique cognitive architecture of these participant groups. Higher PWM scores were associated with better attention in the neurotypical group and PWADHD but not PWS. Higher stuttering characteristics affected PWM in PWADHD and PWS, but the link was stronger in PWS. Whilst higher stuttering characteristics correlated positively with lower attention in PWADHD, the opposite was the case for PWS. PWM was the most important factor in all groups but the way it affected other cognitive processes differed between neurotypical participants, PWS and PWADHD.

Conclusions and implications: Overall NM structures were similar between the neurotypical group and PWADHD but they both differed from those of PWS. Findings argue against a shared underlying mechanism of attention, fluency and PWM in stuttering and ADHD and highlight the importance of including PWM assessments within a network-based framework.

PMID: 42616565

Orofacial somatosensory abilities in speech motor control: A taxonomic framework and its application to stuttering research - FALA

Review Neurosci Biobehav Rev. 2026 Oct:189:106862. Epub 2026 Jul 15.

Free article: https://www.sciencedirect.com/science/article/pii/S0149763426003192?via%3Dihub

Jean-François Patri & Gilles Vannuscorps

Affiliations Collapse

Université catholique de Louvain, Belgium; Université Grenoble Alpes, CNRS, Grenoble, France.

Purpose: A key driver of scientific progress is the ability to decompose complex domains into well-defined components that can be systematically examined and integrated into broader explanatory frameworks. However, research on orofacial somatosensation in speech motor control has so far mostly relied on relatively broad and underspecified constructs. Here, we propose a taxonomic framework designed to support more precise, systematic, and information-processing-oriented terminology in the field.

Method: The framework is organized along two axes: (1) the types of somatosensory information relevant to speech motor control-further specified into origin (articulatory structure), modality (proprioceptive or tactile), and content (spatial, temporal, or force-related) dimensions-and (2) the types of sensory processing abilities-characterized by functional operations (detection, estimation, discrimination), and efficiency dimensions (correctness, latency, and robustness). The framework's utility is illustrated through a structured review of research on orofacial somatosensation in stuttering.

Results: The proposed framework offers a tool for organizing and comparing studies and methodologies investigating elementary orofacial somatosensory abilities in speech. Applied to the literature on stuttering, it reveals an uneven distribution of research efforts and identifies several underexplored areas.

Conclusion: The proposed framework is intended as a first step toward the development of a functional and information-processing-oriented taxonomy of orofacial somatosensory processing in speech motor control.

PMID: 42457002 DOI: 10.1016/j.neubiorev.2026.106862

"Our knowledge, your support": Exploring the research priorities of adults who stutter and perceived supports to enable future research partnerships - SOCIAL

J Fluency Disord. 2026 Sep:89:106243.

Free Text: https://www.sciencedirect.com/science/article/pii/S0094730X26000513?via%3Dihub

Amy Connery et al

Department of Clinical Speech & Language Studies, Trinity College Dublin, Ireland; University of Limerick, Limerick, Ireland.

Background: Stuttering research tends to be researcher-led and there is minimal engagement with adults who stutter to ascertain their research priorities. Research underpinned by the priorities of adults who stutter and which reflects constructs of research engagement has the potential to enhance the translation of research into clinical practice, improve intervention outcomes and empower those who stutter to have a voice in influencing future research directions.

Purpose: This study aimed to identify: the research priorities of adults who stutter; and the actions that researchers need to undertake in order to support the active participation of adults who stutter in future research activities. This exploratory study represents the first step in executing a larger-scale study on priority setting and partnership between researchers and adults who stutter.

Method: Recruitment was achieved through study advertisement by stuttering support groups and university-based research centres in Ireland, the UK and Canada, and using social media platforms. A modified online World Café methodology was employed where adults who stutter participated in rounds of discussions. Analysis of participants' data was completed using qualitative content analysis and an iterative member-checking process.

Results: Eleven adults who stutter (male: n = 7; female: n = 4) participated in the World Café. Seven themes relating to the participants' research priorities, and three themes relating to actions that researchers can take to support future partnerships with people who stutter were identified.

Conclusion: Findings of this exploratory study will inform the methodology of a larger study on research priority setting and partnership between researchers and adults who stutter.

PMID: 42617430

Preoperative Speech Impairments as Precursors of Posterior Fossa Syndrome in Children with Brain Tumours - INFANTIL / GAGUEIRA ADQUIRIDA

Cerebellum. 2026 Aug 21;25(5):130.
Free Text: https://pmc.ncbi.nlm.nih.gov/articles/PMC13493439/

Rida Ahmed et al

University of Potsdam, Potsdam, Germany; University of Groningen, Groningen, The Netherlands; Rigshospitalet University Hospital, Copenhagen, Denmark; University of Copenhagen, Copenhagen, Denmark; University Medical Center Groningen, Groningen, The Netherlands; Lund University, Lund, Sweden; Bambino Gesù Children's Hospital, Rome, Italy; Università Cattolica del Sacro Cuore, Milan, Italy; University of Liverpool, Liverpool, UK; Alder Hey Children's NHS Foundation Trust, Liverpool, UK; Great Ormond Street Hospital, London, UK; Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands; Aarhus University Hospital, Aarhus, Denmark.

Preoperative speech deficits in children with posterior fossa tumours (PFTs) may be linked to postoperative speech impairment (POSI), a hallmark of posterior fossa syndrome, yet this relationship remains underexplored. POSI is characterized by mutism or markedly reduced speech that resolves within weeks to months but often leaves persistent motor-speech deficits. Most existing literature has focused on postoperative outcomes, with limited attention to preoperative speech function. We therefore systematically investigated this association by analyzing perceptible motor-speech features in a large cohort of patients scheduled for surgery within the European Study of Cerebellar Mutism Syndrome. We included data from 135 children which formed three age-and sex- comparable groups: 16 patients who later developed POSI, 11 were mute and five had severely reduced speech (3;9-14;4 years), 62 patients with habitual speech (3;2-17;11 years), and 57 healthy controls (3;0-18;1 years). Patients were Italian-, Dutch-, and English-speaking, while controls were Dutch- and Italian-speaking. Four speech-language therapists rated participants' narrative recordings on 23 speech features (e.g., distorted vowels, imprecise consonants, stuttering, and hoarseness). Group comparisons revealed significant preoperative differences between the children who later developed POSI and the children with habitual speech in both hypernasality and in phonation-respiration (e.g., leaky, hoarse, and strained voice). In addition, patients who later developed POSI showed impairment compared to healthy controls in prosody (e.g., speech rate, excess and equal stress) and articulation (e.g., distorted vowels, imprecise consonants, sequencing errors). Patients with habitual speech differed from the controls in hypernasality and prosody. Moreover, age influenced the severity of articulatory and prosodic symptoms, with younger patients showing greater impairment. Children with PFT show signs of speech impairment preoperatively relative to healthy controls. When comparing patients, those later developing POSI show more severe impairments related to resonance and voice quality. This suggests possible differences in the degree to which speech-related underlying anatomical substrates were compromised, and these early differences may represent potential predictors of later POSI. These findings highlight the value of preoperative assessment for identifying children at a heightened risk of POSI, opening opportunities for prehabilitation - targeted early intervention in the form of speech therapy - to strengthen the speech-motor networks.

PMID: 42625109

Regression to the mean in measures of attitudes related to stuttering, disability, metacognitive awareness, and emotional intelligence - SOCIAL

Logoped Phoniatr Vocol. 2026 Aug 31:1-8.

Kenneth O St Louis et al

West Virginia University, Morgantown, WV, USA; Binghamton University (State University of New York), Binghamton, NY, USA; University of Louisiana at Lafayette, Lafayette, LA, USA; Graduate Program in Speech-Language Pathology, Touro University, New York, NY, USA.

Introduction: A series of recent studies using the Public Opinion Survey of Human Attributes-Stuttering (POSHA-S) have documented an extreme case of regression to the mean (RTM) or a "crossover" effect in public attitudes toward stuttering. Respondents were previously sorted according to changes in their attitudes. The "crossover" effect revealed that respondents with the highest pre-test scores had the lowest post-test scores, those with the lowest pre-test scores had the highest post-test scores, and those with intermediate scores changed minimally.

Method: In this study, RTM was evaluated in four different measures from two USA samples: Bipolar Adjective Scale (BAS), Emotional Intelligence Scale (EIS), Attitudes Toward Disabled Persons (ATDP) scale, and Metacognitive Awareness Inventory (MAI).

Results: The "crossover" effect was observed in three of these scales as well as in one of two POSHA-S scores. Due to lower-than-expected test-retest correlations, correction for regression to the mean diminished or eliminated the "crossover" effect in some of the measures.

Conclusions: Overall, the study showed that the "crossover" effect can be observed in widely different pre- versus post-test measures.

PMID: 42674002

Reliability and Concurrent Validity of the Likert-Type Stuttering Severity Scale and the Visual Analog Scale in Turkish-Speaking Adults Who Stutter - AVALIAÇÃO

Int J Lang Commun Disord. 2026 Sep-Oct;61(5):e70325.

Free Text: https://pmc.ncbi.nlm.nih.gov/articles/PMC13528866/pdf/JLCD-61-0.pdf

Ayşe İlayda Mutlu et al

Başkent University, Ankara, Turkiye; Ankara Yıldırım Beyazıt University, Ankara, Turkiye.

Purpose: This study examined the test-retest and inter-rater reliability of non-clinician severity judgments using two brief rating tools-the 11-point Severity Scale (SEV) and the Visual Analog Scale (VAS)-and evaluated their concurrent validity with clinician-rated Stuttering Severity Instrument-4-Turkish version (SSI-4-TR) scores.

Method: This observational cross-sectional study used speech samples from 15 adults who stutter as stimulus materials. Recordings were evaluated by two speech-language therapists (SLTs) and two independent groups of non-clinician raters (n = 26 per group). SLTs assessed stuttering severity using the SSI-4-TR. One non-clinician group rated severity using a VAS, whereas the other used SEV. All ratings were completed online across three sessions. To examine temporal stability, 30% of the samples were re-rated after a one-week interval.

Results: Both tools demonstrated excellent test-retest reliability, with intraclass correlation coefficients of 0.997 for the VAS and 0.987 for the SEV. Inter-rater reliability was moderate, with ICC values of 0.656 for the VAS and 0.573 for the SEV. Both scales showed strong positive correlations with SSI-4-TR scores, with correlation coefficients of 0.835 for the VAS and .814 for the SEV (p < 0.001).

Conclusions: The findings indicate that the VAS and SEV demonstrated high test-retest reliability and moderate inter-rater reliability and showed strong associations with SSI-4-TR scores, supporting the use of brief perceptual rating scales as practical screening instruments in large-scale and time-limited clinical and research settings where rapid and resource-efficient assessment is required.

PMID: 42671880

Social Isolation in Adults Who Stutter: A Mixed-Methods Investigation of Risk and Correlates - SOCIAL

Am J Speech Lang Pathol. 2026 Sep 8;35(5):2298-2316.

Free Text: https://pmc.ncbi.nlm.nih.gov/articles/PMC13576684/pdf/AJSLP-35-2298.pdf

Seth E Tichenor et al

Duquesne University, Pittsburgh, PA; Speech IRL, Chicago, IL; The University of Akron, OH; Michigan State University, East Lansing.

Purpose: Social isolation is a commonly reported aspect of the stuttering experience. This study qualitatively explored adult stutterers' reports of social isolation while quantitatively examining possible correlates underlying the occurrence of social isolation in this population.

Method: A sample of 264 adults who stutter were asked to share their experiences of social isolation and to complete measures of personality, stuttering role identity, social disconnectedness, and perceived isolation via an internet survey. Qualitative data were analyzed via thematic content analysis. Quantitative data were analyzed via linear and ordinal logistic regression to determine the influence of various correlates on social isolation.

Results: Qualitative data indicated that the experience of social isolation is common to the experience of living as an adult who stutters. Responses indicated that social isolation in adults who stutter is influenced by personality differences, environmental components, and life experiences. Self-reported diagnoses of anxiety and depression did not significantly identify adults with greater social disconnectedness or perceived isolation. Instead, those speakers who less frequently had a goal of stuttering openly, as well as those speakers who were less extraverted, were more likely to experience greater amounts of both social disconnectedness and perceived isolation.

Conclusions: Social isolation in adults who stutter is influenced by internal and external aspects of personal characteristics and experiences. Therapy, self-help/support, and intentional change can help speakers develop greater social connection, thereby decreasing isolation and the adverse impact of stuttering on their lives.

PMID: 42622525

Speech-Induced Myoclonus-Dystonia Mimicking Stuttering and Responding to Zonisamide - INFANTIL / GAGUEIRA NEUROLÓGICA

Ann Indian Acad Neurol. 2026 Aug 28.

Free Text: https://www.ovid.com/jnls/annalsofian/pdf/10.4103/aian.aian_208_26~speech-induced-myoclonus-dystonia-mimicking-stuttering-and

Gouri R Passi et al

Choithram Hospital and Research Centre, Indore, Madhya Pradesh, India; Continua Kids, Gurugram, Haryana, India.

We present the case of a child with myoclonus-dystonia (MD) who was mistaken for having stuttering and responded to oral zonisamide therapy. An 11-year-old boy presented with a 3-month history of speech-induced myoclonus, dystonia, and speech disfluency, with a positive family history in his father. A final diagnosis of MD was made, and the child responded to zonisamide. MD is a treatable form of neurogenic stuttering. It may mimic stuttering, and detailed analysis of the phenomenology and the evaluation of family history may help establish the diagnosis. A trial of zonisamide may be considered in the treatment of this disabling condition.

PMID: 42671403

Structural Brain Correlates of Speech Disfluency in Early Childhood: A Dimensional Analysis in a Population-Based Cohort - INFANTIL / NEUROCIÊNCIAS

Eur J Neurosci. 2026 Aug;64(4):e70652.
Free Text: https://pmc.ncbi.nlm.nih.gov/articles/PMC13481122/pdf/EJN-64-0.pdf

Ashmeet Jolly et al

University of Turku and Turku University Hospital, Turku, Finland; University of Jyväskylä and University of Turku, Finland.

Most neuroimaging studies of speech disfluency have compared individuals who stutter with fluent controls. However, treating speech disfluency as a continuous, dimensional trait offers new insights into the neural basis of fluency during early childhood. We investigated whether naturally occurring variation in speech disfluency is associated with grey matter structure in a population-based sample of 5-year-old children (N = 120; 65 M, 55 F). Disfluency was derived from audio and video-recorded conversational speech samples transcribed and coded using the Ambrose and Yairi classification into stuttering-like disfluencies (SLDs) and other disfluencies (ODs). T1-weighted magnetic resonance imaging data were analyzed using voxel-based morphometry and complemented by surface-based measures of cortical thickness and surface area (FreeSurfer). Whole brain voxel-wise regression tested associations between grey matter and disfluency while adjusting for age, sex, handedness, and maternal education, with additional robustness checks (including intracranial volume adjustment and alternative SLD operationalizations). Higher SLDs were positively correlated with regional grey matter volume primarily in the frontal cortex, with clusters in the left middle frontal gyrus and right superior frontal gyrus showing the greatest cross-model stability (uncorrected voxel-level p < 0.001; FDR-corrected cluster-level p < 0.05); additional regions, including posterior cerebellum, were more sensitive to model specification. No significant voxel-wise associations were observed for ODs, and surface-based analyses yielded no significant associations with SLDs. Boys showed higher SLD rates than girls, but voxel-wise sex × SLD interactions were not significant. These findings suggest that dimensionally measured SLDs across a population-based cohort are most consistently related to frontal control systems implicated in planning and monitoring demands during speech. The overlap with frontal regions reported in diagnosis-based stuttering studies suggests that frontal control circuitry is relevant to fluency variation in early childhood across both dimensional and categorical approaches. These findings support a complementary, dimensional approach to studying fluency variation in early childhood, while underscoring the need for longitudinal work to determine how naturally occurring disfluency relates to later developmental stuttering.

PMID: 42608011

Stuttering-specific self-report scales assessing psychosocial aspects of people who stutter in Japan: A systematic review of measurement and psychometric properties - AVALIAÇÃO

J Fluency Disord. 2026 Sep:89:106246.

Yuhei Kodani et al

Kawasaki University of Medical Welfare, Kurashiki-shi, Okayama, Japan; University of Tsukuba, Tsukuba-shi, Ibaraki, Japan.

Purpose: Appropriate assessment of the psychosocial aspects of people who stutter (PWS) is essential for providing effective treatment. However, in Japan, no systematic synthesis is currently available regarding the available self-report measures, the constructs they assess, and their psychometric properties. This study aimed to systematically summarize the self-report psychosocial scales designed for Japanese PWS, as well as the current state of their measurement constructs and psychometric properties.

Methods: Following the PRISMA guidelines, PubMed, PsycINFO, ICHUSHI Web, and CiNii Research were searched on December 6, 2025. Measurement constructs were classified according to the classification proposed by Johnson et al. (2023). The quality of the psychometric properties was assessed by two independent reviewers using the quality criteria proposed by Terwee et al. (2007).

Results: Of the 389 records initially retrieved, seven articles validating six scales were included. Regarding the measurement constructs, all six scales (100.0%) assessed the "impact of stuttering" and two scales (33.3%) assessed "speech satisfaction" or "anxiety", whereas no scales measuring "communication attitudes" were identified. In the quality assessment of psychometric properties, positive ratings ("+") were infrequent, accounting for only three of the 54 ratings (5.6%), and "no information on validation" was the most common rating.

Conclusions: Although self-report scales for psychosocial aspects of Japanese PWS exist, the coverage of target populations and measurement constructs is limited, and the verification of psychometric properties remains insufficient. Future research must address clinical needs by appropriately validating unverified properties and promoting knowledge sharing among support providers.

PMID: 42673697

The Family History of Developmental Stuttering: A Scoping Review - GENÉTICA

Int J Lang Commun Disord. 2026 Sep-Oct;61(5):e70323.

Free Text: https://pmc.ncbi.nlm.nih.gov/articles/PMC13528779/pdf/JLCD-61-0.pdf

Yuto Sato et al

University of Tsukuba, Tsukuba-city, Ibaraki, Japan.

Background: A positive family history is a significant risk factor for developmental stuttering. However, the reported rates of positive family histories are inconsistent across studies, making it difficult to synthesise the findings.

Aim: This scoping review aimed to systematically map the literature on family histories of stuttering to clarify the reported stuttering proportions and identify methodological trends and gaps.

Method & procedures: We conducted a literature search of PubMed, Web of Science, and PsycINFO on 4 February 2025. Two authors independently screened the records in two stages: first by title and abstract, and then by full text.

Outcomes & results: We reviewed 19 studies that reported family histories of participants with developmental stuttering. Basic study characteristics such as sample size and country were extracted, and descriptive statistics, including family history rates, were calculated for quantitative data. A key finding was the wide variability in the reported proportion of individuals with a positive family history, ranging from 20.0% to 90.9%. This variability was strongly associated with inconsistencies in methodology, including the scope of relatives considered, the definition of stuttering within the family, and data collection methods.

Conclusions & implications: This review found that methodological variability appeared to be the primary factor contributing to the wide variation in reported rates in the research on family histories of stuttering. The findings suggest the need for rigorous research approaches to obtain a more comprehensive understanding of this phenomenon.

PMID: 42671853

The perceptions of speech-language pathologists on managing stuttering across the lifespan: Outcomes of a mixed-methods national workforce survey - TERAPIA

Int J Speech Lang Pathol. 2026 Aug 20:1-15.

Free Text: https://www.tandfonline.com/doi/epdf/10.1080/17549507.2026.2718365?needAccess=true

Emma Alegre et al

The University of Queensland, Australia; The University of Newcastle, Australia.

Purpose: This study explored the self-perceived competence of speech-language pathologists working in Australia to manage stuttering across the lifespan, factors influencing provision of evidence-based practice, and support needs to develop confidence in this area.

Method: A national online survey was completed by 147 practising speech-language pathologists. Quantitative data were analysed using descriptive statistics and qualitative data were analysed using content analysis.

Result: Perceived competence was highest and above the competence threshold for assessment of stuttering across the lifespan and for working with pre-school children. Participants rated themselves below the competence threshold in one-third of measured areas, including troubleshooting therapy and discharging clients for school-age, adolescents, and adults who stutter. Adolescent stuttering received the most ratings below the competence threshold, specifically in selecting appropriate therapy, collaborating with teachers, and evaluating outcomes. Barriers to evidence-based practice included affordability, long waitlists, and session frequency. Factors affecting treatment success included systemic constraints, limited experience, and challenges applying research to diverse presentations. Speech-language pathologists emphasised the need for practical learning, observation, supervision, and accessible professional development.

Conclusion: Findings highlight self-reported gaps in competence and systemic barriers to managing stuttering. Support needs identified by speech-language pathologists provide evidence to inform future professional development and advocacy to improve services.

PMID: 42622633

The relationship between bullying and stuttering in schoolchildren: scoping review

Codas. 2026 Aug 7;38(5):e20250428.
Free Article: https://pmc.ncbi.nlm.nih.gov/articles/PMC13520639/pdf/codas-38-5-e20250428.pdf

Folha GA et al

Universidade de São Paulo - USP, Ribeirão Preto, Brazil

Purpose: to map and synthesise scientific evidence on the relationship between bullying and stuttering in schoolchildren. The following specific aims will be investigated: (1) the impact of the co-occurrence of both; (2) strategies for identifying bullying in children who stutter; and (3) approaches to tackling bullying in this population.

Research strategies: Scoping Review was conducted following the Joanna Briggs Institute methodology. The PubMed, Scielo, CAPES, and Web of Science databases were consulted using specific descriptors.

Selection criteria: Full-text articles in English or Portuguese were included, with no time limit. Opinion articles, letters to the editor, and studies that did not meet the objective of the study were excluded.

Data analysis: The data extracted included author, title, objectives, methodology, results, and conclusions, culminating in a PRISMA-ScR flowchart for organising the findings.

Results: The studies analysed point to a higher prevalence of bullying, anxiety and low self-esteem among children and adolescents who stutter, especially in the school environment. Weakened social relationships and lack of awareness increase the risk of exclusion. Speech therapists play an essential role in guidance and prevention, although there is still a need for more robust research on effective interventions.

Conclusion: This study confirmed the relationship between stuttering and the experience of bullying, highlighting the impacts on the mental health and socialisation of people who stutter. In addition, although scarce, the main intervention strategies identified to date were gathered, such as educational programmes and prevention activities, still in the school environment and in conjunction with the academic staff and family members.

PMID: 42585491

The role of temperament in stuttering frequency and impact in children under 7 - Corrigendum to - INFANTIL / EMOCIONAL
Journal of Communication Disorders 97 (2022) 106201

J Commun Disord. 2026 Sep-Oct:123:106685.

Sarah Delpeche et al

City, University of London, London, United Kingdom; Michael Palin Centre, London, United Kingdom.

No abstract available

PMID: 42648948

Understanding social anxiety in adolescents who stutter: A multi-informant study of the roles of stuttering severity, parenting styles, social participation and speech avoidance - EMOCIONAL

J Commun Disord. 2026 Aug 1:123:106680.
Free Article: https://www.sciencedirect.com/science/article/pii/S002199242600064X?via%3Dihub

Omer Levy Kardash

The Hebrew University of Jerusalem, Jerusalem, Israel

Background: Adolescents who stutter are at increased risk for social anxiety, yet the factors underlying this vulnerability remain unclear. This study examined the contributions of stuttering severity, parenting styles, social participation, and avoidance of speech situations to social anxiety among adolescents who stutter compared with adolescents who do not stutter.

Method: Participants were 158 adolescents (79 who stutter and 79 who do not stutter) and their mothers. Adolescents who do not stutter were recruited as close friends or classmates of adolescents who stutter to enhance group comparability. Adolescents reported stuttering severity and avoidance of speech situations; parents reported parenting styles and social participation. Social anxiety was assessed using adolescent and parent reports. Analyses included paired-samples t tests, correlations, and regression models.

Results: Adolescents who stutter showed higher social anxiety than adolescents who do not stutter in both reports. Among adolescents who stutter, speech avoidance was associated with adolescent- and parent-reported social anxiety. Stuttering severity was associated with parent-reported social anxiety but was not significant beyond avoidance. Social participation was negatively associated with social anxiety but was not significant beyond avoidance. Among adolescents who do not stutter, adolescent reported social anxiety was associated with speech avoidance, whereas parent reported social anxiety was associated with authoritarian and permissive parenting styles.

Conclusions: Speech avoidance emerged as the strongest correlate of social anxiety among adolescents who stutter. Interventions may benefit from targeting speech avoidance and promoting verbal engagement to help mitigate social anxiety in this population.

PMID: 42566852

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