Lidcombe Program telehealth treatment for children 6-12 years of age: A Phase II trial

BACKGROUND

For children older than 6 years who stutter, there is a gap in clinical research. This is an issue for speech-language pathologists because the tractability of stuttering decreases and the risk of long-term psychological consequences increase with age.

PURPOSE

To report a Phase II trial of a telehealth version of the Lidcombe Program with school-age children.

METHODS

Participants were 37 children who stuttered, 6-12 years of age, from Australia, New Zealand, Hong Kong, and Singapore. Parents were trained by video telehealth how to deliver the Lidcombe Program to their child. Primary and secondary outcomes were stuttering severity and psychosocial functioning measured pre-treatment and at 6 months and 12 months after starting treatment. Parents submitted two 10-minute recordings of their child speaking in conversation, and three measures of anxiety, impact of stuttering, and communication attitude.

RESULTS

Six months after starting treatment, seven children (18.9%) attained Lidcombe Program Stage 2 criteria, 25 children (67.6%) showed a partial response to treatment, and five children (13.5%) showed no response. By 12 months, 12 children (32.4%) had reached Stage 2 criteria. Psychosocial improvements were observed 6 and 12 months after starting treatment.

CONCLUSIONS

The Lidcombe Program may eliminate or nearly eliminate stuttering for about one third of children 6-12 years of age. Randomized controlled trials with this age group involving the Lidcombe Program are warranted. In the interim, the Lidcombe Program is a clinical option clinicians can implement with this age group to reduce stuttering and its psychosocial impacts.

Contemporary clinical conversations about stuttering: What does brain imaging research mean to clinicians?

PURPOSE

To discuss among neuroscientists and community speech-language pathologists what brain imaging research means to clinicians.

METHOD

Two university neuroscientists and two speech-language pathologists in private practice discussed the matter. Written conversational turns in an exchange were limited to 100 words each. When that written dialogue was concluded, each participant provided 200 words of final reflection about the matter.

RESULT

For now, neuroscience treatments are not available for clinicians to use. But sometime in the future, a critical mass of neuroscientists will likely produce such treatments. The neuroscientists expressed diverse views about the methods that might be used for that to occur.

CONCLUSION

Neuroscience does have practical clinical application at present and, in a way, that does not exclude a concurrent influence of the social model of disability. As such, the current practices of the clinicians are supported by basic neuroscience research.

Ann Packman: Reflections on a career

This is the fourth in a series of papers that provides an historical record in this journal of contributions made by the most influential figures in the field of stuttering. Ann Packman is an Australian researcher who will retire shortly. This paper reflects on her long and productive career, and her contributions to the field. With a background in literature, linguistics, philosophy, psychology, and the brain and language, she became well equipped to contribute to understanding stuttering causality. That work, and an accompanying collection of basic and applied clinical research, was constantly grounded with the thoughts and feelings of those who stutter in the community.

The Fifth Croatia Stuttering Symposium: Part I. Treatments for early stuttering

PURPOSE

The Fifth Croatia Stuttering Symposium in 2022 continued the Fourth Croatia Stuttering Symposium 2019 theme of the connection between research and clinical practice. At the 2022 Symposium, there were 145 delegates from 21 countries. This paper documents the contents of the first of three Symposium modules.

METHODS

The module topic was that three treatments for early childhood stuttering are supported by randomized controlled trial evidence. A clinical situation was considered where a parent of a 3-year-old child asked what results to expect of stuttering treatment.

RESULTS

A distinguished scholar presented a 5-minute video interpretation of the research concerning the randomized controlled trial evidence for the three treatments. Three master clinicians then each presented a 2-minute video demonstration of how those research findings might be applied in a clinical situation. Following that, the convenors moderated a discussion between the distinguished scholar, master clinicians, and delegates regarding the research and how it applies to clinical practice.

Searching for Lidcombe Program mechanisms of action: Inter-turn speaker latency

The Lidcombe Program is a well-established and efficacious treatment for early stuttering, but little is currently known about its mechanisms of action. The present report explores the possibility that inter-turn speaker latency might be associated with such mechanisms of action. Inter-turn speaker latency was measured in audio recordings of children, parents, and clinicians conversing, taken during Lidcombe Program treatment consultations. Five clinicians reduced their inter-turn speaker latencies during clinical consultations when they were speaking to children, in comparison with when they were speaking to parents. It is possible that inter-turn speaker latency is associated with the Lidcombe Program treatment process vicariously, and this possibility requires further research.

The Fifth Croatia Stuttering Symposium: Part II. Natural recovery from early stuttering

PURPOSE

The Fifth Croatia Stuttering Symposium of 2022 continued the Fourth Croatia Stuttering Symposium 2019 theme of the connection between research and clinical practice. At the 2022 Symposium, there were 145 delegates from 21 countries. This paper documents the contents of the second of three Symposium modules.

METHODS

The module topic was that some children with early stuttering will recover naturally. A clinical situation was considered where a parent of a 3-year-old child asked if a clinician can predict whether their child will recover from stuttering without treatment.

RESULTS

A distinguished scholar presented a 5-minute video interpretation of research about this topic. Three master clinicians then each presented a 2-minute video demonstration of how that research might be applied in a clinical situation. Following that, the convenors moderated a discussion between the distinguished scholar, master clinicians, and delegates regarding the research and how it applies to clinical practice.

Contemporary clinical conversations about stuttering: Neurodiversity and ableism

PURPOSE

To discuss issues about neurodiversity and ableism, and how they pertain to clinical management of stuttering, with particular reference to early childhood stuttering.

METHODS

During a webinar this year, the issue emerged of how concepts of neurodiversity and ableism apply to early childhood stuttering during the pre-school years. It became apparent that this topic elicited disparate views and would be of particular interest to students of speech-language pathology. Consequently, the leaders of that webinar continued the conversation by written dialogue for the purpose of placing it on record.

RESULTS

The discussants reached agreement on many points, but there was some diversity of viewpoint about how neurodiversity and ableism should apply to clinical practice with children who have recently begun to stutter.

Reduced stuttering for school-age children: A systematic review

BACKGROUND

Treatment of school-age children (6-12 years of age) who stutter is a public health priority. Their clinical needs include a psychosocial focus and stuttering reduction. For the latter clinical need, there is a critical window of opportunity for these children warranting research attention.

PURPOSE

The purpose of the review is to guide future clinical research by establishing (a) what interventions are associated with stuttering reduction for school-age children (b) the reported immediate and longer-term effects of those interventions, and (c) the level of evidence for these interventions in terms of study design.

METHODS

Fourteen databases and three conference proceedings were searched for interventions used to reduce stuttering in school-age children. Primary outcomes were mean stuttering reductions pre-treatment, immediately post-treatment, and any follow-up assessments.

RESULTS

Of the 4305 studies identified from the databases, 67 studies met inclusion criteria. Five different treatment approaches were reported in the literature that might reduce stuttering for a school-age child, but with varying effect sizes. These include (a) operant methods, (b) speech restructuring, (c) combined operant methods and speech restructuring, (d) machine-driven treatments, and (e) treatments with a cognitive behaviour therapy component.

CONCLUSIONS

Operant methods warrant investigation in future clinical trial research, as do variants of speech restructuring. Hybrid approaches showed encouraging results, including speech restructuring variants combined with operant methods or with cognitive behaviour therapy. However, evidence is preliminary only at Phase I and II trials. Several treatments with reported clinical promise have been overlooked for decades and require further investigation.

Cost of Illness and Health-Related Quality of Life for Stuttering: Two Systematic Reviews

PURPOSE

For those who stutter, verbal communication is typically compromised in social situations. This may attract negative responses from listeners and stigmatization by society. These have the potential to impair health-related quality of life across a range of domains, including qualitative and quantitative impacts on speech output, mental health issues, and failure to attain educational and occupational potential. These systematic reviews were designed to explore this matter using traditional health economics perspectives of utility measures and cost of illness.

METHOD

Studies were included if they involved children, adolescents, or adults with stuttering as a primary diagnosis. The quality of life search strategy identified 2,607 reports, of which three were included in the quality of life analysis. The cost of illness search strategy identified 3,778 reports, of which 39 were included in the cost of illness analysis.

RESULTS

Two of the three studies included in the quality of life analysis had a high risk of bias. When measured using utility scores, quality of life for people who stutter was in the range of those reported for chronic health conditions such as diabetes mellitus, cardiovascular disease, and cancer. However, there is little such evidence of quality of life impairment during the preschool years. Studies included in the cost of illness analysis carried considerable risk of bias overall.

CONCLUSIONS

For people who stutter, there are substantive direct and indirect costs of illness. These include impairment, challenges, and distress across many domains throughout life, including income, education, employment, and social functioning. Evidence of quality of life impairment using utility measures is extremely limited. If this situation is not remedied, the lifetime impairment, challenges, and distress experienced by those who stutter cannot be documented in a form that can be used to influence health policy and health care spending.

SUPPLEMENTAL MATERIAL

https://doi.org/10.23641/asha.24168201.

The Fifth Croatia Stuttering Symposium: Part III. Mental health and early stuttering

PURPOSE

The Fifth Croatia Stuttering Symposium of 2022 continued the Fourth Croatia Stuttering Symposium 2019 theme of the connection between research and clinical practice. At the 2022 Symposium, there were 145 delegates from 21 countries. This paper documents the contents of the third of three Symposium modules.

METHODS

The module topic was mental health and early stuttering, and that pre-schoolers who stutter are at risk of developing mental health issues. A clinical situation was considered where a parent of a 3-year-old child asked a clinician what the early signs of mental health issues might be for a child who stutters.

RESULTS

A distinguished scholar presented a 5-minute video interpretation of research about this topic. Three master clinicians then each presented a 2-minute video demonstration of how that research might be applied in a clinical situation. Following that, the convenors moderated a discussion between the distinguished scholar, master clinicians, and delegates regarding the research and how it applies to clinical practice.

Psychosocial features of stuttering for school-age children: A systematic review

BACKGROUND

Contemporary clinical and empirical perspectives indicate that management of the psychosocial features of stuttering is fundamental for effective treatment. Interventions that improve psychosocial outcomes for school-age children who stutter are, therefore, needed.

AIMS

This systematic review identifies what psychosocial outcomes have been explored in existing school-age clinical research, the measures used and the potential treatment effects. This will provide guidance for developing interventions that reflect contemporary perspectives of stuttering management.

METHODS & PROCEDURES

A total of 14 databases and three conference proceedings were searched for clinical reports of psychosocial outcomes of children aged 6-12 years. The review did not include pharmacological interventions. Psychosocial measures and outcomes were analysed in each study based on data recorded pre-treatment, immediately post-treatment and for any follow-up assessments.

MAIN CONTRIBUTIONS

Of the 4051 studies identified from the databases, a total of 22 studies met criteria for inclusion in the review. From these 22 studies, the review identified four prominent psychosocial domains that have been explored in school-age clinical research to date: Impact of stuttering, communication attitude, anxiety and speech satisfaction. These domains vary in measurement and effect sizes. Two behavioural treatments were associated with anxiety reduction, even though they did not contain anxiolytic procedures. No evidence of potential treatment effects emerged for communication attitudes. Quality of life-an important psychosocial domain pertinent to health economics-did not feature in school-age clinical reports.

CONCLUSIONS & IMPLICATIONS

The psychosocial features of stuttering need to be managed during the school years. Three psychosocial domains-impact of stuttering, anxiety and speech satisfaction-show evidence of potential treatment effects. This review provides direction for future clinical research so that speech-language pathologists can effectively and holistically manage school-age children who stutter.

WHAT THIS PAPER ADDS

What is already known on the subject Elevated levels of anxiety are apparent for children and adolescents who stutter. Therefore, the need to assess and manage psychosocial features of stuttering are expertly regarded as clinical priorities. Clinical trials of such psychosocial features of stuttering for children aged 6-12 years are not well advanced and, therefore, do not reflect current best practice management of this disorder. What this study adds to existing knowledge This systematic review identifies four different psychosocial domains measured and reported in the literature for school-age stuttering management. For three psychosocial domains, some evidence of potential treatment effects emerged with participant numbers greater than 10: Impact of stuttering, anxiety and speech satisfaction. Though treatment effect sizes varied, there is a suggestion that cognitive behaviour therapy can improve anxiety of school-age children who stutter. There is also suggestion that two other behavioural treatments can improve anxiety of school-age children who stutter. What are the potential or actual clinical implications of this work? Given the essential need for school-age children who stutter to receive management of any speech-related anxiety they may experience, it would be productive to discover in future clinical research what interventions could contribute to that goal-behavioural or psychosocial, or both. This review reveals that cognitive behaviour therapy, and other behavioural treatments, are associated with anxiety reductions. Such approaches should be considered for future clinical trial research to help advance the evidence base for managing school-age stuttering.

Barry Guitar: Reflections on a career

This is the third in a series of papers that provides an historical record in this journal of contributions made by the most influential figures in the field of fluency disorders. The paper reflects on the long and productive career of Barry Guitar, documenting his outstanding achievements. The paper is based on interviews with him during 2022. Like no one else in our field, Barry Guitar has an understanding of the experience of stuttering and how to cope with it, and, throughout his career, he has used that understanding to inspire others to cope with it.

Lidcombe Program translation to community clinics in Australia and England

BACKGROUND

Early intervention is essential healthcare for stuttering, and the translation of research findings to community settings is a potential roadblock to it.

AIMS

This study was designed to replicate and extend the Lidcombe Program community translation findings of O'Brian et al. (2013) but with larger participant numbers, incorporating clinicians (speech pathologists/speech anlanguage therapists) and their clients from Australia and England.

METHODS & PROCEDURES

Participants were 51 clinicians working in public and private clinics across Australia (n = 36) and England (n = 15), and 121 of their young stuttering clients and their families. Outcome measures were percentage of syllables stuttered (%SS), parent severity ratings at 9 months post-recruitment, number of clinic visits to complete Stage 1 of the Lidcombe Program, and therapist drift.

OUTCOMES & RESULTS

Community clinicians in both countries achieved similar outcomes to those from randomized controlled trials. Therapist drift emerged as an issue with community translation. Speech and language therapists in England attained outcomes 1.0%SS above the speech pathologists in Australia, although their scores were within the range attained in randomized trials.

CONCLUSIONS & IMPLICATIONS

Community clinicians from Australia and England can attain Lidcombe Program outcome benchmarks established in randomized trials. This finding is reassuring in light of the controlled conditions in clinical trials of the Lidcombe Program compared with its conduct in community practice. The long-term impact of therapist drift in community clinical practice with the Lidcombe Program has yet to be determined.

WHAT THIS PAPER ADDS

What is already known on the subject The Lidcombe Program is an efficacious early stuttering intervention. Translation to clinical communities has been studied with one Australian cohort. What this paper adds to existing knowledge A larger translation cohort is studied, comprising community clinicians and children in Australia and England. What are the potential or actual clinical implications of this work? Community clinicians from Australia and England can attain Lidcombe Program outcome benchmarks established in randomized trials. This finding is reassuring in light of the controlled conditions in clinical trials of the Lidcombe Program compared with its conduct in community practice.

Stuttering, family history and counselling: A contemporary database

BACKGROUND

Information about genetic influence is useful to when counselling parents or caregivers who have infants and children at risk for stuttering. Yet, the most comprehensive family aggregate database to inform that counselling is nearly four decades old (Andrews et al., 1983). Consequently, the present study was designed to provide a contemporary exploration of the relationship between stuttering and family history.

METHODS

Data were sourced from the Australian Stuttering Research Centre, comprising 739 participants who presented for assessment, treatment, or investigation of stuttering. Reported family history data were acquired from pedigrees collected during assessment. We sought to establish the relation of the following variables to family history of stuttering: incidence, proband sex, parent sex, stuttering severity, age, reported age of stuttering onset, and impact of stuttering. Data were analysed with chi-square tests for independence, logistic and linear regression models.

RESULTS

Results were broadly consistent with existing data, but the following findings were novel. Males and females who stutter have the same increased odds of having a father who stutters relative to a mother who stutters. Males had later stuttering onset than females, with genetic involvement in this effect. There was a greater impact of stuttering for females than males with a family history of stuttering.

CONCLUSION

These findings have clinical applications. Speech-language pathologists may have infant or child clients known to them who are at risk of beginning to stutter. Information from the present study can be applied to counselling parents or caregivers of such children about stuttering and family history.

The Complexity of Stuttering Behavior in Adults and Adolescents: Relationship to Age, Severity, Mental Health, Impact of Stuttering, and Behavioral Treatment Outcome

PURPOSE

This study investigated the complexity of stuttering behavior. It described and classified the complexity of stuttering behavior in relation to age, behavioral treatment outcomes, stuttering severity, anxiety-related mental health, impact of stuttering, and gender.

METHOD

For this study, a taxonomy was developed-LBDL-C7-which was based on the Lidcombe Behavioral Data Language of stuttering. It was used by five experienced judges to analyze the complexity of stuttering behavior for 84 adults and adolescents before and after speech restructuring treatment. Data were 3,100 stuttering moments, which were analyzed with nominal logistic regression.

RESULTS

The complexity of stuttering behavior appears not to change as a result of treatment, but it does appear to change with advancing age. Complexity of stuttering behavior was found to be independently associated with clinician stuttering severity scores but not with percentage of syllables stuttered or self-reported stuttering severity. Complexity of stuttering behavior was not associated with gender, anxiety, or impact of stuttering.

CONCLUSION

Clinical and research applications of these findings are discussed.

Comparison of Stuttering Severity and Anxiety During Standard and Challenge Phone Calls

PURPOSE

This study was designed to answer three questions. (a) Does percentage of syllables stuttered (%SS) differ between standard and challenge phone calls. (b) Does anxiety differ between standard and challenge phone calls. (c) Is there a relationship between %SS and anxiety during standard and challenge phone calls?

METHOD

Participants were 230 adults diagnosed with stuttering, who were participants from five clinical trials. Each participant received two 10-min phone calls at pretreatment and a further two phone calls 6 months or 20 weeks postrandomization. One phone call was standard, and the other presented challenge: occasionally disagreeing with, interrupting, and talking over participants, or asking for clarification of their views.

RESULTS

Statistically significant, but clinically minor, increases of %SS and anxiety occurred during the challenge phone calls. There was a statistically significant association between %SS and anxiety.

CONCLUSIONS

Variable phone call procedures to assess stuttering severity in clinical trials are not likely to spuriously inflate or deflate treatment outcomes to a clinically important extent. Regardless, the present results suggest that there is statistical merit in controlling the nature of phone calls during clinical trials with the simple and replicable method developed in this report. Additionally, there is procedural merit in the challenge phone call procedure; it is a more valid representation of the challenges of everyday speech than the standard procedure. However, a disadvantage of the challenge phone call procedure is the practical issues associated with its use. The clinical and theoretical applications of the results are discussed.

Conversational speech of school-age children after syllable-timed speech treatment for stuttering

Purpose: The purpose of this laboratory study was to investigate whether rhythmic speech was primarily responsible for stuttering reductions in four school-aged children after the instatement stage of the Westmead Program of syllable-timed speech (STS) intervention. The study was designed to inform further development of the program. Reduction in variability of vowel duration is a marker of STS, and it was predicted that this would be present in the children's conversational speech after Stage 1 of the program if they were using STS. To strengthen such a finding, it was also predicted that there would be no reduction in articulation rate, sentence complexity, and utterance length after treatment, as there is evidence that reductions in these can reduce stuttering. Perceptual judgments of speech quality after treatment were also made by independent listeners.Method: Participants were four children, ages 8-11 years, who completed Stage 1 of an STS program and whose stuttering had reduced significantly. Pre-treatment (PRE) and post-treatment (POST) within-clinic audio-visual recordings of conversational speech were analysed for percentage of syllables stuttered, variability of vowel duration, articulation rate, and length and complexity of utterance. Four blinded listeners made perceptual judgments of speech quality in the POST recordings.Result: Recordings of all children showed that variability of vowel duration clearly reduced from the PRE to POST speech samples. Importantly, articulation rate and language use were not compromised. Some possible indicators of rhythmicity were identified in one child in the perceptual study.Conclusion: The findings suggest that STS was primarily responsible for the clinically significant reductions in stuttering after Stage 1 of the program. There is an urgent need for more evidence-based interventions for stuttering in this age group and further development of STS interventions is warranted.

Contemporary issues with stuttering: The Fourth Croatia Stuttering Symposium

PURPOSE

During the 2019 Fourth Croatia Clinical Symposium, speech-language pathologists (SLPs), scholars, and researchers from 29 countries discussed speech-language pathology and psychological practices for the management of early and persistent stuttering. This paper documents what those at the Symposium considered to be the key contemporary clinical issues for early and persistent stuttering.

METHODS

The authors prepared a written record of the discussion of Symposium topics, taking care to ensure that the content of the Symposium was faithfully reproduced in written form.

RESULTS

Seven contemporary issues for our field emerged from the Symposium.

CONCLUSION

Effective early intervention is fundamental to proper health care for the disorder. However, as yet, there is no consensus about the timing of early intervention and how it should be managed. Currently, clinical translation is a barrier to evidence-based practice with early stuttering, and proactive strategies were suggested for junior SLPs. Apprehension emerged among some discussants that treatment of early stuttering may cause anxiety. For persistent stuttering, assessment procedures were recommended, as were strategies for dealing with childhood bullying. There was agreement that SLPs are the ideal professionals to provide basic cognitive-behavior therapy for clients with persistent stuttering. Questions were raised about our discipline standards for basic professional preparation programs for stuttering management.

Psychological characteristics of early stuttering

PURPOSE

The purpose of this study was to use psychological measures of pre-schoolers who stutter and their parents to inform causal theory development and influence clinical practices. This was done using data from a substantive clinical cohort of children who received early stuttering treatment.

METHOD

The cohort (N = 427) comprised parents and their children who were treated with the Lidcombe Program, the Westmead Program, and the Oakville Program. The study incorporated demographic information, stuttering severity, and child and parent psychological measures prior to treatment.

RESULT

The cohort revealed nothing unusual about behavioural and emotional functioning, or the temperaments, of pre-school children that would influence treatment, be targeted during treatment, or influence causal theory development. However, a third of parents were experiencing moderate to high life stressors at the time of seeking treatment, and half the parents failed first-stage screening for Anankastic Personality Disorder.

CONCLUSION

The present results are consistent with a number of previous reports that showed that the population of pre-schoolers who stutter have no unusual psychological profiles. Hence, these results suggest that the association between mental health and stuttering later in life is a consequence of the disorder rather than being a part of its cause. The finding of the life stress of parents who seek stuttering treatment for pre-school children has potential clinical importance and warrants further investigation. Further psychological research is required about parents of pre-school children who stutter, because half the parents in the cohort failed the screener for Anankastic Personality Disorder. This is of interest because a previous study associated screening failure for another personality disorder (Impulsive Personality Disorder) with treatment dropout for early childhood stuttering.

Measures of Psychological Impacts of Stuttering in Young School-Age Children: A Systematic Review

Purpose Recent research has shown that some school-age children who stutter may have speech-related anxiety. Given this, speech-language pathologists require robust measures to assess the psychological effects of stuttering during the school-age years. Accordingly, this systematic review aimed to explore available measures for assessing the psychological impacts of stuttering in young school-age children and to examine their measurement properties. Method The systematic search protocol was registered with PROSPERO (ID: 163181). Seven online databases, in addition to manual searching and screening of reference lists, were used to identify appropriate measures for the population of children who stutter aged 7-12 years. The first two authors independently assessed the measures using the quality appraisal tool described by Terwee et al. (2007). Results Despite the comprehensive search strategy, only six measures were identified for quality appraisal. No assessment tool was found to possess adequate measurement properties for the eight assessed domains: content validity, internal consistency, construct validity, reproducibility, reliability, responsiveness, floor and ceiling effects, and interpretability. No measure had clear evidence of responsiveness to clinical change. Based on the criterion defined by the Terwee et al. (2007) appraisal tool, the Communication Attitude Test and the Overall Assessment of the Speaker's Experience of Stuttering for School-Age Children received the highest number of ratings in support of their measurement properties. Conclusions The results highlight a lack of available measures in this domain and poor practices in developing and testing measurement instruments. To ensure that clinicians and researchers are equipped with sound measures to meet the mental health needs of this vulnerable population, further research to establish resources is needed.

Validity of telephone calls to assess percentage of syllables stuttered with adolescents in clinical research

PURPOSE

Karimi, O'Brian, Onslow, and Jones (2013) reported, for adults, no systematic differences between percentage of syllables stuttered (%SS) scores during a 12-hour day and 10-minute phone calls. The present study replicated that finding with adolescents, using valid methods for the age group. The present study also extended that initial report by determining whether the gender of the caller influenced %SS scores.

METHOD

Participants were 17 adolescents with stuttering. Percentage of syllables stuttered scores were obtained from a 12-hour day of the adolescents' lives, and two 10-minute unscheduled phone calls made before and after that day. One phone call was from a male caller and the other from a female caller.

RESULTS

For adolescents, analysis of covariance (ANCOVA) and intraclass correlations (ICC) replicated the overall Karimi, O'Brian, Onslow, and Jones (2013) finding. No significant differences were found between the %SS scores of the three speech samples, and these %SS scores were found to be highly correlated. However, in contrast to the Karimi, O'Brian, Onslow, and Jones (2013) finding with adults, Bland-Altman plot results revealed a caveat to this finding when applied to individual adolescents. Additionally, there was no effect due to the gender of the caller.

CONCLUSION

A 10-minute phone call can be used confidently to assess group mean %SS scores during stuttering research with adolescents. However, a 10-minute phone call cannot be used confidently to assess %SS scores of individual adolescent participants. For the latter context, such as with data-based case studies and single-subject experimentation, we recommend supplementing %SS scores with self-reported severity scores.

Natural recovery from stuttering for a clinical cohort of pre-school children who received no treatment

PURPOSE

The natural stuttering recovery rate by adulthood is high. Community cohort studies suggest a much lower rate during the first 18 months after onset, but this may be different for clinical cohorts of pre-school aged children. The present research and case presentations add to data reported by Franken et al. by investigating early natural recovery for a clinical cohort.

METHOD

Participants were 16 pre-school children presenting to a clinic with stuttering onset 1-15 months earlier. The children were studied for a mean of 19.4 months (84.3 weeks) using parent report and clinician identification of stuttering from recorded conversations. The children received no treatment during the study. Data were obtained for each participant and are presented graphically.

RESULT

Experienced speech-language pathologists detected stuttering in the recordings of 3 of 4 children identified as recovered by their parents. Only 1 of the 16 children (6.3%) was confirmed as recovered.

CONCLUSION

There is no reason to believe that the early natural recovery rate for clinically presenting children is different from community cohorts. Parent report of natural recovery during the pre-school years needs to be confirmed by clinician observation of the child's speech; otherwise, there is risk of harmful false negative identification. The present data support the Yairi et al. different recovery pathways for children who stutter.

Speech and Anxiety Management With Persistent Stuttering: Current Status and Essential Research

Purpose The purpose of this review article is to provide an overview of the current evidence base for the behavioral management of stuttering and associated social anxiety. Method We overview recent research about stuttering and social anxiety in the context of contemporary cognitive models of social anxiety disorder. That emerging evidence for self-focused attention and safety behavior use with those who stutter is considered in relation to current treatment approaches for stuttering: speech restructuring and social anxiety management. Results The emerging information about social anxiety and stuttering suggests a conflict between the two clinical approaches. For those clients who wish to control their stuttering and where speech restructuring is deemed the most suitable approach, it is possible that speech restructuring may (a) induce or increase self-focused attention, (b) promote the use of safety behaviors, and (c) become a safety behavior itself. This conflict needs to be explored further within clinical and research contexts. Conclusions The issues raised in this review article are complex. It appears that evidence-based speech treatment procedures are in conflict with current best-practice treatment procedures that deal with social anxiety. In this review article, we propose directions for future research to inform the development of improved treatments for those who stutter and recommendations for interim clinical management of stuttering.

Predictors of Lidcombe Program treatment dropout and outcome for early stuttering

BACKGROUND

Information is available about what predicts Lidcombe Program treatment time, but nothing is known about what predicts treatment prognosis.

AIMS

To investigate the predictors of treatment dropout and treatment outcome for children who were treated for early stuttering with the Lidcombe Program (N = 277).

METHODS & PROCEDURES

A total of 32 variables were used as predictors in regression analyses of short- and medium-term Lidcombe Program outcome, and of treatment dropout.

OUTCOMES & RESULTS

Regression analyses associated children who have better language skills and easy temperament with better treatment outcome, although only a small portion of the variance of treatment outcome was accounted for by these variables. There was an association between treatment dropout and parental scores on a personality screening tool relating to their impulsivity.

CONCLUSIONS & IMPLICATIONS

Variables identified as predictors of Lidcombe Program treatment outcome were statistically significant, but not clinically significant. They did not account for a clinically substantive portion of treatment outcomes. Findings about parental impulsivity and their relationship with intervention drop-out require replication with prospective methods and comprehensive assessment of parent psychological status. This is particularly important because parents are involved in conducting all early interventions. What this paper adds What is already known on the subject Information is available about what predicts Lidcombe Program treatment time, but nothing is known about what predicts Lidcombe Program treatment outcome. What this paper adds to existing knowledge There are predictors of Lidcombe Program treatment outcome that are statistically significant, but none are clinically significant. What are the potential or actual clinical implications of this work? Clinicians can tell parents that nothing has been found that can assist with making prognostic indications about treatment outcome for their children.

Verbal Contingencies in the Lidcombe Program: A Noninferiority Trial

Purpose The Lidcombe Program is an efficacious and effective intervention for early stuttering. The treatment is based on parent verbal response contingent stimulation procedures, which are assumed to be responsible for treatment effect. The present trial tested this assumption. Method The design was a parallel, open plan, noninferiority randomized controlled trial. In the experimental arm, the five Lidcombe Program verbal contingencies were removed from parent instruction. The primary outcome was beyond-clinic percentage syllables stuttered at 18-month follow-up. Seventy-four children and their parents were randomized to one of the two treatment arms. Results Findings of noninferiority were inconclusive for the primary outcome of stuttering severity, based on a margin of 1.0 percentage syllables stuttered. Conclusions The inconclusive finding of noninferiority means it is possible that verbal contingencies make some contribution to the Lidcombe Program treatment effect. However, considering all primary and secondary outcomes, an overriding impression from the trial is a similarity of outcomes between the control and experimental arms. The clinical applications of the trial are discussed, along with further research that is needed.

Ehud Yairi: Reflections on a Career

This is the second in a series of papers that provides an historical record in this journal of contributions made by the most influential researchers in the field of fluency disorders. The present paper reflects on the long and productive career of Ehud Yairi, outlining his many contributions to the field of stuttering, and his outstanding achievements and accomplishments. The paper is based on interviews with him during 2020, after the conclusion of his research career. His visionary, lifetime work has advanced our understanding of the nature, origins, and epidemiology of this disorder.

Temperament and early stuttering intervention: Two perspectives

PURPOSE

To discuss clinical applications of research findings about temperament and early stuttering.

METHOD

A "1000-bytes" format (Onslow & Millard, 2012) was used to provide readers with contemporaneous observation of a "conversation" between the authors. The conversation is proceeded by a prologue and followed by concluding statements from each author.

RESULTS

One author contended that comprehensive, multidimensional assessment of temperament domains is essential during clinical management of early stuttering, and the results of that assessment are best incorporated into a multifactorial treatment approach. The other author contested that view, arguing that such an approach is not empirically justifiable at present.

CONCLUSIONS

The authors agree about the salience of research on temperament and early stuttering but have different perspectives about the topic when applied to providing health care for early stuttering.

Clinical Trials of Adult Stuttering Treatment: Comparison of Percentage Syllables Stuttered With Self-Reported Stuttering Severity as Primary Outcomes

Purpose In a companion paper, we found no statistical reason to favor percentage syllables stuttered (%SS) over parent-reported stuttering severity as a primary outcome measure for clinical trials of early stuttering. Hence, considering the logistical advantages of the latter measure, we recommended parent-reported stuttering severity for use as an outcome measure. The present report extends the prior analysis to a comparison of %SS with self-reported stuttering severity (SRSS) for use as an outcome measure in clinical trials of stuttering treatments for adults. Method We analyzed data from four randomized clinical trials for adults that incorporated %SS and SRSS data at prerandomization and at 6 months post randomization. We analyzed the distributions associated with the two measures, their agreement, and their estimates of effect sizes. Results The positively skewed distribution of %SS warrants much reservation about its value as a clinical trial outcome measure. This skew causes inherent instability because of spurious data associated with low scores, which occur commonly at the low end of such a distribution. This inherent instability is compounded by inherent problems with absolute reliability of %SS measures. These problems are reduced with the much more normal distribution of SRSS. Conclusions The logistical arguments in favor of SRSS apply similarly to adults as they do when parents report the stuttering severity of their children. However, there are statistical reasons to favor SRSS over %SS measures as a primary outcome of clinical trials with adult participants: SRSS has acceptable discriminant validity and a normal distribution, and it is less error prone than %SS. We recommend SRSS as a primary outcome for clinical trials of adults with stuttering.

Exploring how preschoolers who stutter use spoken language during free play: A feasibility study

Purpose: Play is critically important for the healthy development of children. This study explored the viability of a methodology to investigate how preschoolers who stutter use language in play with peers.Method: Transcripts of peer-directed utterances of four preschoolers who stutter and four matched non-stuttering children during free play were analysed for measures of verbal output (numbers of utterances and words), length and complexity of utterances (mean length of communication unit and syntactic complexity), and lexical diversity (number of different words, type token ratio and vocd).Result: Viable speech samples were obtained. Verbal output scores of two children who stutter were the same or higher than their matched controls whereas mean length of communication unit and syntactic complexity scores for three children who stutter were lower than their matched controls. In 22 of the 24 comparisons across number of different words, type token ratio, and vocd, scores of children who stutter were the same or higher than their matched controls.Conclusion: Interpretation of data is limited by the small sample size and lack of standardised testing. However, results indicate that the methodology has promise for future research into the way preschoolers who stutter use spoken language during play and the quality of their play.

Three Lidcombe program clinic visit options: a phase II trial

PURPOSE

Weekly clinic visits are recommended in the Lidcombe Program Treatment Guide (Packman et al., 2015). That specification is based on traditional speech-language pathology practices rather than empirical research, and two studies have suggested that such a format does not always occur in clinical communities. This research was conducted to determine the relative efficacy of different Lidcombe Program models of clinic visits.

METHOD

Thirty-one children were randomized to three different service delivery models: twice-weekly, weekly and fortnightly (once every two weeks) clinic visits. All children were treated with the Lidcombe Program following manualised procedures. Measures of percentage syllables stuttered were obtained from beyond clinic audio recordings pre- and post-randomization.

RESULTS

Results showed that the twice-weekly and fortnightly treatment formats were not suitable for all families. However, the fortnightly outcomes at 9 months post-randomization were comparable with those attained during weekly clinic visits.

CONCLUSIONS

These results justify further, large-scale clinical trialling to compare weekly Lidcombe Program clinic visits with schedules involving less frequent clinic visits.

Phase I trial of a standalone internet social anxiety treatment for adolescents who stutter: iBroadway

BACKGROUND

iGlebe is a fully automated internet treatment program for adults who stutter that has been shown, in some cases, to reduce anxiety and effectively manage social anxiety disorder for many participants. No such automated internet treatment program exists for adolescents who stutter.

AIMS

The present paper reports a Phase I trial of an adolescent version of the adult program: iBroadway.

METHODS & PROCEDURES

Participants were 29 adolescents in the age range 12-17 years who were seeking cognitive-behaviour therapy (CBT) for anxiety associated with stuttering. The design was a non-randomized Phase I trial with outcome assessments at pre-treatment and immediately post-treatment after 5 months of access to the program. No contact by a clinical psychologist occurred during participant use of the program. Outcomes were a range of psychological, quality-of-life and stuttering severity measures.

OUTCOMES & RESULTS

The compliance rate for the seven iBroadway modules over 5 months was extremely favourable for internet CBT, at 52.4%. There was evidence of treatment effects for (1) the number of DSM-IV mental health diagnoses with the Diagnostic Interview Schedule for Children; (2) the Unhelpful Thoughts and Beliefs About Stuttering scale; (3) the Subjective Units of Distress Scale; and (4) parent-reported speech satisfaction.

CONCLUSIONS & IMPLICATIONS

Further development of iBroadway, the adolescent version of iGlebe, with Phase II trialling is warranted.

A three-arm randomized controlled trial of Lidcombe Program and Westmead Program early stuttering interventions

PURPOSE

To compare two experimental Westmead Program treatments with a control Lidcombe Program treatment for early stuttering.

METHOD

The design was a three-arm randomized controlled trial with blinded outcome assessments 9 months post-randomization. Participants were 91 pre-school children.

RESULTS

There was no evidence of difference in percentage syllables stuttered at 9 months among groups. Dropout rates were substantive and may have been connected with novel aspects of the trial design: the use of community clinicians, no exclusion criteria, and randomization of children younger than 3 years of age.

CONCLUSION

The substantive dropout rate for all three arms in this trial means that any conclusions about the 9-month stuttering outcomes must be regarded as tentative. However, continued development of the Westmead Program is warranted, and we are currently constructing an internet version.

After the RESTART trial: six guidelines for clinical trials of early stuttering intervention

BACKGROUND

The Rotterdam Evaluation Study of Stuttering Therapy randomized trial (RESTART) was seminal, comparing the Lidcombe Program with RESTART Demands and Capacities Model-based treatment (RESTART-DCM) for pre-school age children who stutter.

AIMS

To critique the methods of the RESTART trial to develop guidelines for its systematic replication and extension. Beyond that, to contribute to the refinement of existing methodological guidelines for early stuttering intervention.

METHOD

The discussion is organized around methodological issues of primary outcomes, treatment completion, clinician allegiance, treatment fidelity, age exclusions and no-treatment control reasoning.

MAIN CONTRIBUTION

We recommend six methodological guidelines to guide future clinical trials comparing the Lidcombe Program with RESTART-DCM, which can be applied to clinical trials of other early stuttering intervention methods: (1) incorporate a continuous measure of primary outcome; (2) ensure that all children in clinical trials have completed treatment; (3) eliminate potential bias due to clinician allegiance; (4) establish treatment fidelity within and beyond the clinic; (5) include children younger than 3 years in clinical trials; and (6) establish an estimate of treatment effect size at some stage of treatment development.

CONCLUSION

In addition to guiding future clinical research comparing RESTART-DCM and Lidcombe Program treatment, these recommendations may extend to influence positively other treatment developments for early stuttering.

Supplementing stuttering treatment with online cognitive behavior therapy: An experimental trial

PURPOSE

It is now well established that adults who present to speech clinics for help with stuttering will have an increased risk of having an anxiety disorder, particularly social anxiety disorder. Concomitant psychological problems are known to interfere with the maintenance of the benefits of behavioral speech treatments for stuttering. The current team has developed and trialed a cognitive behavior therapy (CBT) program designed specifically to reduce anxiety in adults who stutter, and trials have shown promise for both an in-clinic version and a standalone internet-based version. The aim of the present study is to determine whether iGlebe, the internet-based version of the team's internet CBT treatment (previously known as CBTPsych), enhances the benefits of behavioral stuttering treatment.

METHOD

Participants were 32 adults seeking treatment for stuttering. The design was a two-arm randomized experimental trial with blinded outcome assessments at 6 and 12 months post-randomization. Both arms received basic speech-restructuring training to reduce stuttering, without any anxiolytic (anxiety reducing) components. The experimental arm also received 5 months access to iGlebe.

RESULTS

There was evidence that, at 12 months post-randomization, iGlebe added clinically significant improvements to self-reported stuttering severity and quality of life. The present experimental trial provides the first evidence that the addition of CBT to speech restructuring improves speech outcomes.

CONCLUSIONS

The present results will be the basis for the development of a comprehensive, internet-based treatment program for anxiety associated with stuttering. Ultimately, it may be possible for such an economical, scalable, and translatable comprehensive treatment model to supplement standard speech-language pathology treatment practices for those who stutter.

In-Clinic and Standalone Internet Cognitive Behavior Therapy Treatment for Social Anxiety in Stuttering: A Randomized Trial of iGlebe

Purpose iGlebe is an individualized, fully automated Internet cognitive behavior therapy (CBT) treatment program that requires no clinician contact. Phase I and II trials have demonstrated that it may be efficacious for treating the social anxiety commonly associated with stuttering. The present trial sought to establish whether the outcomes achieved by iGlebe are noninferior to those associated with in-clinic CBT from clinical psychologists. Method Fifty adults with stuttering were randomized to receive in-clinic CBT for anxiety or 5 months online access to iGlebe. The design was a noninferiority randomized controlled trial with outcomes assessed at prerandomization and at 6 and 12 months postrandomization. Primary outcomes were CIDI-Auto-2.1 diagnoses for anxiety and mood disorders and Brief Fear of Negative Evaluation scale scores ( Carleton, McCreary, Norton, & Asmundson, 2006 ). Secondary outcomes included speech, psychology, and quality-of-life measures. Results Outcomes consistently showed clinically significant improvements of around a medium effect size for the cohort as a whole from prerandomization to 6 months postrandomization, which were maintained at 12 months postrandomization. Comparisons between the 2 treatments showed little difference between iGlebe and in-clinic treatment for all primary and secondary outcomes, with last observation carried forward for missing data. Conclusions iGlebe is a promising individualized treatment for social anxiety for adults who stutter and offers a viable and inexpensive alternative to in-clinic CBT with clinical psychologists. An issue to emerge from this trial, which requires clarification during future clinical trials of iGlebe, is the posttreatment relation between percentage of syllables stuttered and self-reported stuttering severity ratings.

Response to the Letter to the Editor From Marcotte (2019) Regarding "The History of Stuttering by 7 Years: Follow-Up of a Prospective Community Cohort" by Kefalianos et al. (2017)

Purpose The purpose of this letter is to respond to Marcotte's (2019) letter to the editor, "The Influence of Treatment on Children's Recovery from Stuttering: Comments on Kefalianos et al. (2017) and Leech et al. (2017)," published by the Journal of Speech, Language, and Hearing Research.

The Satisfaction with Communication in Everyday Speaking Situations (SCESS) scale: An overarching outcome measure of treatment effect

PURPOSE

The Consolidated Standards of Reporting Trials (CONSORT) statement strongly suggests one primary outcome for clinical trials, yet the outcomes of stuttering treatments span numerous behavioral and psychosocial domains. That presents a roadblock to eventual meta-analysis of clinical trials for adults who stutter.

METHOD

We propose a simple and convenient outcome measure for clinical trials of stuttering treatment for adults that spans whatever behavioral and psychosocial factors might impel clients to seek treatment: a nine-point scale of Satisfaction with Communication in Everyday Speaking Situations (SCESS). The scale consists of one question which is simple, brief, easy to administer, cost-free, and translatable into many languages. The present report develops the SCESS scale by determining its reliability, content validity, and construct validity.

RESULTS

Reliability, content validity, and construct validity of the SCESS were confirmed with statistically significant and substantive correlations with speech-related and anxiety-related measures. However, the SCESS did not correlate well with percentage syllables stuttered. Three behavioral and psychosocial measures had the highest correlation with the SCESS: total Overall Assessment of the Speaker's Experience of Stuttering, self-reported stuttering severity, and Unhelpful Thoughts and Beliefs about Stuttering.

CONCLUSION

The SCESS measure has potential to be applied as an overarching clinical trial outcome measure of stuttering treatment effect. This study provides some preliminary evidence for including it as a primary or secondary outcome in clinical trials of adult stuttering treatments. However, further studies are needed to establish the SCESS responsiveness to different stuttering treatments.

Challenges and Strategies for Speech-Language Pathologists Using the Lidcombe Program for Early Stuttering

PURPOSE

The Lidcombe program is a treatment for preschool-age children who stutter. Studies indicate that its implementation is not always straightforward. In this study, challenges that parents and speech-language pathologists (SLPs) encounter when implementing the Lidcombe program were identified, and strategies to address them were sought.

METHOD

In Part 1, Lidcombe program treatment challenges were determined from 4 sources. In Part 2, 7 SLPs with 15 to 23 years of Lidcombe program experience were interviewed to develop strategies to respond to the identified treatment challenges.

RESULT

A template of the themes and a report with possible strategies are the outcomes of this study. A total of 124 themes were identified, mostly related to the implementation of Lidcombe program procedures. Strategies to deal with these challenges were formulated.

CONCLUSIONS

This study provides treatment challenges that parents or SLPs may encounter during the Lidcombe program. It also provides strategies that SLPs can suggest to address them. An added contribution of the findings is that SLPs in the clinic can now anticipate the sort of treatment challenges that parents may face. A summary of the findings will be made available on the Australian Stuttering Research Centre website and through the Lidcombe Program Trainers Consortium.

Rhythmic speech and stuttering reduction in a syllable-timed language

Speaking rhythmically, also known as syllable-timed speech (STS), has been known for centuries to be a fluency-inducing condition for people who stutter. Cantonese is a tonal syllable-timed language and it has been shown that, of all languages, Cantonese is the most rhythmic (Mok, 2009). However, it is not known if STS reduces stuttering in Cantonese as it does in English. This is the first study to investigate the effects of STS on stuttering in a syllable-timed language. Nineteen native Cantonese-speaking adults who stutter were engaged in conversational tasks in Cantonese under two conditions: one in their usual speaking style and one using STS. The speakers' percentage syllables stuttered (%SS) and speech rhythmicity were rated. The rhythmicity ratings were used to estimate the extent to which speakers were using STS in the syllable-timed condition. Results revealed a statistically significant reduction in %SS in the STS condition; however, this reduction was not as large as in previous studies in other languages and the amount of stuttering reduction varied across speakers. The rhythmicity ratings showed that some speakers were perceived to be speaking more rhythmically than others and that the perceived rhythmicity correlated positively with reductions in stuttering. The findings were unexpected, as it was anticipated that speakers of a highly rhythmic language such as Cantonese would find STS easy to use and that the consequent reductions in stuttering would be great, even greater perhaps than in a stress-timed language such as English. The theoretical and clinical implications of the findings are discussed.

Comparison of adults who stutter with and without social anxiety disorder

PURPOSE

Social anxiety disorder is a debilitating anxiety disorder associated with significant life impairment. The purpose of the present study is to evaluate overall functioning for adults who stutter with and without a diagnosis of social anxiety disorder.

METHOD

Participants were 275 adults who stuttered (18-80 years), including 219 males (79.6%) and 56 females (20.4%), who were enrolled to commence speech treatment for stuttering. Comparisons were made between participants diagnosed with social anxiety disorder (n = 82, 29.8%) and those without that diagnosis (n = 193, 70.2%).

RESULTS

Although the socially anxious group was significantly younger than the non-socially anxious group, no other demographic differences were found. When compared to the non-socially anxious group, the socially anxious group did not demonstrate significantly higher self-reported stuttering severity or percentage of syllables stuttered. Yet the socially anxious group reported more speech dissatisfaction and avoidance of speaking situations, significantly more psychological problems, and a greater negative impact of stuttering.

CONCLUSION

Significant differences in speech and psychological variables between groups suggest that, despite not demonstrating more severe stuttering, socially anxious adults who stutter demonstrate more psychological difficulties and have a more negative view of their speech. The present findings suggest that the demographic status of adults who stutter is not worse for those with social anxiety disorder. These findings pertain to a clinical sample, and cannot be generalized to the wider population of adults who stutter from the general community. Further research is needed to understand the longer-term impact of social anxiety disorder for those who stutter.

Comparison of Percentage of Syllables Stuttered With Parent-Reported Severity Ratings as a Primary Outcome Measure in Clinical Trials of Early Stuttering Treatment

PURPOSE

This report investigates whether parent-reported stuttering severity ratings (SRs) provide similar estimates of effect size as percentage of syllables stuttered (%SS) for randomized trials of early stuttering treatment with preschool children.

METHOD

Data sets from 3 randomized controlled trials of an early stuttering intervention were selected for analyses. Analyses included median changes and 95% confidence intervals per treatment group, Bland-Altman plots, analysis of covariance, and Spearman rho correlations.

RESULTS

Both SRs and %SS showed large effect sizes from pretreatment to follow-up, although correlations between the 2 measures were moderate at best. Absolute agreement between the 2 measures improved as percentage reduction of stuttering frequency and severity increased, probably due to innate measurement limitations for participants with low baseline severity. Analysis of covariance for the 3 trials showed consistent results.

CONCLUSION

There is no statistical reason to favor %SS over parent-reported stuttering SRs as primary outcomes for clinical trials of early stuttering treatment. However, there are logistical reasons to favor parent-reported stuttering SRs. We conclude that parent-reported rating of the child's typical stuttering severity for the week or month prior to each assessment is a justifiable alternative to %SS as a primary outcome measure in clinical trials of early stuttering treatment.

Development of an internet version of the Lidcombe Program of early stuttering intervention: A trial of Part 1

PURPOSE

There is evidence that access to treatment for early stuttering is not available for all who need it. An internet version of the Lidcombe Program for early stuttering (Internet-LP) has been developed to deal with this shortfall. The LP is suitable for such development because it is delivered by parents in the child's everyday environment, with training by a speech-language pathologist. A Phase I trial of Internet-LP Part 1, comprising parent training, is reported here.

METHOD

Eight parents of pre-schoolers who stutter were recruited and six completed the trial.

RESULT

Post-trial assessment indicated that the parents scored well for identifying and measuring stuttering and for knowledge about conducting practice sessions, including how to present verbal contingencies during practice sessions.

CONCLUSION

The results prompted minor adjustments to Part 1 and guided the construction of Part 2, which instructs parents during the remainder of the treatment process.

Characteristics of adults who stutter by treatments sought

Several treatment approaches are available for adults who stutter, including speech treatment, cognitive behaviour therapy (CBT) treatment for anxiety, and a combination of both. It is useful to determine whether any differences exist between adults who stutter enrolled in different types of treatment. Therefore, the purpose of this study was to compare demographic, speech, and psychological characteristics of adults who stutter enrolled in speech, psychological, and combined treatment programs. Participants were 288 adults who stuttered (18-80 years) enrolled in one of three different treatment programs: Speech Treatment for stuttering (n = 134), Anxiety Treatment for anxiety about stuttering (n = 70), or Speech Treatment for Stuttering With or Without Anxiety Treatment (n = 84). Participants completed a range of demographic, speech, and psychological measures prior to the start of treatment. A significantly higher proportion of participants in the Anxiety Treatment group were in a personal relationship than the other treatment groups. The Anxiety Treatment group had higher average age than the other treatment groups. The Speech Treatment group also demonstrated significantly higher self-rated stuttering severity than the Anxiety Treatment group, even though there were no significant difference between groups for clinician-rated percentage of syllables stuttered. Although most characteristics of adults who stuttered did not vary by treatment type, the present findings suggest that adults who stutter enrolled in speech treatment perceived their stuttering as more severe, which may have prompted treatment seeking. Further research is needed regarding the supportive influence of personal relationship for those with the disorder.

The Topography of Stuttering in Cantonese

OBJECTIVE

This is the first study to investigate the behavioral nature (topography) of stuttering in Cantonese. Cantonese, a Sino-Tibetan language, is both tonal and syllable-timed. Previous studies of stuttering topography have mainly been in Western languages, which are mainly stress-timed.

METHODS

Conversational speech samples were collected from 24 native Cantonese-speaking adults who stuttered. Six consecutive stuttering moments from each participant were analyzed using the Lidcombe behavioral data language (LBDL). A complexity analysis based on the LBDL was developed to indicate the proportion of multiple-behavior stuttering moments for each participant.

RESULTS

There was no significant difference in the frequency of the 7 LBDL behaviors. Almost half the stuttering moments across participants were reported as complex, containing more than 1 stuttering behavior, and stuttering complexity correlated significantly with stuttering severity.

CONCLUSIONS

These preliminary findings require replication because of their important theoretical and clinical implications. Differences in topography across languages have the potential to contribute to our understanding of the nature of stuttering. Clinically, the recognition of such differences may assist practitioners in identifying stuttering, for example when screening for early stuttering. The LBDL complexity score developed in this study has the potential to be used in other languages.

The History of Stuttering by 7 Years of Age: Follow-Up of a Prospective Community Cohort

PURPOSE

For a community cohort of children confirmed to have stuttered by the age of 4 years, we report (a) the recovery rate from stuttering, (b) predictors of recovery, and (c) comorbidities at the age of 7 years.

METHOD

This study was nested in the Early Language in Victoria Study. Predictors of stuttering recovery included child, family, and environmental measures and first-degree relative history of stuttering. Comorbidities examined at 7 years included temperament, language, nonverbal cognition, and health-related quality of life.

RESULTS

The recovery rate by the age of 7 years was 65%. Girls with stronger communication skills at the age of 2 years had higher odds of recovery (adjusted OR = 7.1, 95% CI [1.3, 37.9], p = .02), but similar effects were not evident for boys (adjusted OR = 0.5, 95% CI [0.3, 1.1], p = .10). At the age of 7 years, children who had recovered from stuttering were more likely to have stronger language skills than children whose stuttering persisted (p = .05). No evident differences were identified on other outcomes including nonverbal cognition, temperament, and parent-reported quality of life.

CONCLUSION

Overall, findings suggested that there may be associations between language ability and recovery from stuttering. Subsequent research is needed to explore the directionality of this relationship.

Lexical tone and stuttering in Cantonese

Cantonese is a tone language, in which the variation of the fundamental frequency contour of a syllable can change meaning. There are six different lexical tones in Cantonese. While research with Western languages has shown an association between stuttering and syllabic stress, nothing is known about whether stuttering in Cantonese speakers is associated with one or more of the six lexical tones. Such an association has been reported in conversational speech in Mandarin, which is also a tone language, but which varies markedly from Cantonese. Twenty-four native Cantonese-speaking adults who stutter participated in this study, ranging in age from 18-33 years. There were 18 men and 6 women. Participants read aloud 13 Cantonese syllables, each of which was produced with six contrastive lexical tones. All 78 syllables were embedded in the same carrier sentence, to reduce the influence of suprasegmental or linguistic stress, and were presented in random order. No significant differences were found for stuttering moments across the six lexical tones. It is suggested that this is because lexical tones, at least in Cantonese, do not place the task demands on the speech motor system that typify varying syllabic stress in Western languages: variations not only in fundamental frequency, but also in duration and intensity. The findings of this study suggest that treatments for adults who stutter in Western languages, such as speech restructuring, can be used with Cantonese speakers without undue attention to lexical tone.

Safety Behaviors and Stuttering

PURPOSE

Those who are socially anxious may use safety behaviors during feared social interactions to prevent negative outcomes. Safety behaviors are associated with anxiety maintenance and poorer treatment outcomes because they prevent fear extinction. Social anxiety disorder is often comorbid with stuttering. Speech pathologists reported in a recent publication (Helgadottir, Menzies, Onslow, Packman, & O'Brian, 2014a) that they often recommended procedures for clients that could be safety behaviors. This study investigated the self-reported use of safety behaviors by adults who stutter.

METHOD

Participants were 133 adults who stutter enrolled in an online cognitive-behavior therapy program. Participants completed a questionnaire about their use of potential safety behaviors when anxious during social encounters. Correlations were computed between safety behaviors and pretreatment scores on measures of fear of negative evaluation and negative cognitions.

RESULTS

Of 133 participants, 132 reported that they used safety behaviors. Many of the safety behaviors correlated with higher scores for fear of negative evaluation and negative cognitions.

CONCLUSIONS

Adults who stutter report using safety behaviors, and their use is associated with pretreatment fear of negative evaluation and unhelpful thoughts about stuttering. These results suggest that the negative effects of safety behaviors may extend to those who stutter, and further research is needed.

Temperament and Early Stuttering Development: Cross-Sectional Findings From a Community Cohort

PURPOSE

The purpose of this study was to ascertain if there is an association between stuttering severity and behaviors and the expression of temperament characteristics, including precursors of anxiety.

METHOD

We studied temperament characteristics of a prospectively recruited community cohort of children who stutter (N = 173) at ages 3, 4, and 6 years using the Short Temperament Scale STS (Prior, Sanson, Smart & Oberklaid, 2000).

RESULTS

Six of 131 statistical tests of association between stuttering severity and behaviors and temperament traits were statistically significant at the 5% level, which was no more than expected by chance alone.

CONCLUSIONS

On the basis of parent responses to the STS, preschoolers who exhibited different levels of stuttering severity and behaviors did not generally express temperament traits differently from one another. Stuttering severity and stuttering behaviors were not associated with the precursors of anxiety. Overall, taking multiple tests into consideration, results show little evidence of association between stuttering severity and temperament up to 4 years of age or between stuttering behaviors and temperament up to 6 years of age.