Stuttering and Cluttering

There is more to cluttering than meets the eye: The prevalence of cluttering and association with psychological well-being indices in an undergraduate sample

BACKGROUND

Cluttering is a fluency disorder characterized by an abnormally fast or irregular speech delivery rate along with disfluencies that are frequent but are not judged to be stuttering. Data on cluttering prevalence in the general population are scarce, as well as its association with psychological well-being indices, such as anxiety, and depressive symptoms.

AIMS

To estimate cluttering prevalence among undergraduates, as well as its relationship with psychological and well-being indicators.

METHODS & PROCEDURES

To address these issues, a large sample (n = 1582) of undergraduates completed a questionnaire that provided a lay definition of cluttering and were asked to identify themselves as clutterers (SI-Clut), as well as to indicate the presence of several psychological and mental well-being indices.

OUTCOMES & RESULTS

A total of 276 respondents (23%) self-identified as clutterers (now or in the past), with 55.1% of those being male. Only 56 respondents (3.5% of the total sample; about 21% of SI-Clut) reported having received speech therapy for cluttering. Relative to students self-identifying as non-clutterers, self-identification of cluttering was associated with higher levels of psychosomatic symptoms, depressive symptoms and stress, indicating a tendency toward internalizing psychopathology, along with lower self-esteem, and lower subjective happiness.

CONCLUSIONS & IMPLICATIONS

The current findings point to the high prevalence of students self-identifying as clutterers, along with a significant link between cluttering and mental distress. Therefore, it is important to increase public awareness of cluttering, its diagnosis and treatment. From the clinical perspective, the elevated levels of somatic complaints, anxiety and depression may represent internalizing psychopathology, associated with more covert rather than overt symptomatology. Such symptom manifestation calls for special attention from the speech-language pathologists providing cluttering therapy, using designated well-being or mental health screening tools. Although data on standard cluttering treatment are limited, it should be customized to the client's unique difficulties. Speech-language pathologists' understanding of cluttering, which includes both speech characteristics as well as psychological and social aspects of well-being, may assist them in implementing effective treatments.

WHAT THIS PAPER ADDS

What is already known on the subject Cluttering is a fluency disorder characterized by an abnormally fast or irregular speech rate, along with various disfluencies and articulatory imprecision. It may co-occur with other disorders, such as learning disabilities, and attention-deficit/hyperactivity disorder. Data on cluttering prevalence and its association with psychological well-being indices, such as anxiety and depression, are limited. What this paper adds to existing knowledge A total of 276 undergraduates (23%) self-identified as clutterers, of whom 55.1% were males. A total of 56 respondents (3.5% of the total sample, and about 21% of undergraduates self-identified as clutterers) reported having received speech therapy for cluttering. Psychosomatic symptoms, depressive symptoms and stress levels were higher among these students, suggesting a tendency toward internalizing psychopathology, along with a lower sense of self-esteem and subjective happiness. What are the potential or actual clinical implications of this work? The high prevalence of students self-identifying as clutterers, along with the low percentage of respondents who received speech therapy for cluttering, emphasize the need to raise public awareness of the problem, its diagnosis and treatment (Reichel et al., 2010). The association between cluttering and mental distress requires speech-language pathologists to be aware that cluttering may have covert symptomatology, similar to stuttering, which should be addressed in therapy.

A Comprehensive Analysis of Speech Disfluencies in Autistic Young Adults and Control Young Adults: Group Differences in Typical, Stuttering-Like, and Atypical Disfluencies

PURPOSE

The purpose of this study was to examine the nature of speech disfluencies in autistic young adults and controls by using a wide-range disfluency classification of typical disfluencies (TD; i.e., filled pauses, revisions, abandoned utterances, and multisyllable word and phrase repetitions), stuttering-like disfluencies (SLD; i.e., sound and syllable repetitions, monosyllable word repetitions, prolongations, blocks, and broken words), and atypical disfluencies (AD; i.e., word-final prolongations and repetitions and atypical insertions).

METHOD

Thirty-two autistic young adults and 35 controls completed a narrative telling task based on socially complex events. Frequencies of total disfluencies, TD, SLD, AD and stuttering severity were compared between groups.

RESULTS

The overall frequency of disfluencies was significantly higher in the autistic group and significant between-group differences were found for all disfluency categories. The autistic group produced significantly more revisions, filled pauses, and abandoned utterances, and each subtype of SLD and AD than the control group. In total, approximately every fourth autistic participants scored at least a very mild severity of stuttering, and every fifth produced more than three SLD per 100 syllables.

CONCLUSIONS

Disfluent speech can be challenging for effective communication. This study revealed that the speech of autistic young adults was highly more disfluent than that of the controls. The findings provide information on speech disfluency characteristics in autistic young adults and highlight the importance of evaluating speech disfluency with a wide-range disfluency classification in autistic persons in order to understand their role in overall communication. The results of this study offer tools for SLPs to evaluate and understand the nature of disfluencies in autistic persons.

The effect of manual movements on stuttering in individuals with down syndrome

PURPOSE

Stuttering may disrupt the speech of individuals with Down syndrome (DS), but standard stuttering therapies may be less adapted to these clients' needs. This study examined if their strength in gesture use can lead to the development of a new stuttering therapy.

METHOD

Eighteen individuals with DS who stutter participated in an experimental task. During this task, they produced sentences in three different conditions: once without the ability to use gestures, once while moving the mouth of a hand puppet synchronous with their speech, and once while making beat gestures along their speech. Stuttering frequency was measured and compared between conditions while controlling for the effect of articulation rate.

RESULTS

The experimental hand puppet and beat condition did not affect the stuttering frequency, but the covariate articulation rate did. An exploratory posthoc analysis showed that the articulation rate decreased during the experimental hand puppet and beat condition. Manual movements in the present task might only induce fluency through articulation rate reduction. However, analyses at individual level show significant interindividual variability.

CONCLUSION

Individual analyses show that effect on stuttering frequency cannot be attributed entirely to articulation rate reduction and that beat gestures might still play a role. However, at this point, there is not enough direct evidence to implement beat gestures in current stuttering therapy.

Influence of gestures on the intelligibility and comprehensibility of utterances with stuttering events in individuals with Down syndrome

INTRODUCTION

Individuals with Down syndrome (DS) often stutter, which can affect their speech intelligibility. Previous research has shown that manual signs can enhance speech intelligibility and comprehensibility. It remains unclear to what extent spontaneous hand gestures, such as iconic and beat gestures, may enhance intelligibility and/or comprehensibility during utterances with stuttering events.

METHODS

Eleven individuals with DS who stutter provided video-recorded speech samples. From these samples, 60 utterances containing a stuttering event were selected. In half of them, the stuttering events were accompanied by gestures; in the other half, the stuttering events were not accompanied by gestures. The samples were shown to 250 assessors who were blind to the study's goals. Each sample was shown in three visibility conditions: 1) video-with-audio, 2) video-with-audio but with the speaker's mouth covered and 3) audio-only. The assessors rated speech intelligibility on a 7-point Likert scale and transcribed the speech sample. The effect of gesture production, gesture type and the visibility conditions on comprehensibility and intelligibility was examined with a hierarchical multiple linear regression.

RESULTS

When a speaker had used a gesture during a stuttering event, the Likert scale score increased with 0.47 and the accuracy of transcription with 9.07%. There was no difference in effect between the different gesture types. Despite the effect from gesture use, there was no effect of the visibility conditions on the Likert scale or transcription score.

CONCLUSIONS

Gestures positively affect intelligibility and comprehensibility of utterances with stuttering events in individuals with DS by altering the speech production. The possibility of beat gestures as a therapy method should be examined, with caution for the development of maladaptive behaviours.

The Coexistence of Disabling Conditions in Children Who Stutter: Evidence From the National Health Interview Survey

PURPOSE

Stuttering is a disorder that has been associated with coexisting developmental disorders. To date, detailed descriptions of the coexistence of such conditions have not consistently emerged in the literature. Identifying and understanding these conditions can be important to the overall management of children who stutter (CWS). The objective of this study was to generate a profile of the existence of disabling developmental conditions among CWS using national data.

METHOD

Six years of data from the National Health Interview Survey (2010-2015) were analyzed for this project. The sample consisted of children whose respondents clearly indicated the presence or absence of stuttering. Chi-square tests of independence were used for comparing categorical variables; and independent-samples t tests, for comparing continuous variables. Multiple logistic regression analyses were used for determining the odds of having a coexisting disabling developmental condition.

RESULTS

This study sample included 62,450 children, of which 1,231 were CWS. Overall, the presence of at least 1 disabling developmental condition was 5.5 times higher in CWS when compared with children who do not stutter. The presence of stuttering was also associated with higher odds of each of the following coexisting developmental conditions: intellectual disability (odds ratio [OR] = 6.67, p < .001), learning disability (OR = 5.45, p < .001), attention-deficit hyperactivity disorder/attention-deficit disorder (OR = 3.09, p < .001), seizures (OR = 7.52, p < .001), autism/Asperger's/pervasive developmental disorder (OR = 5.48, p < .001), and any other developmental delay (OR = 7.10, p < .001).

CONCLUSION

Evidence from the National Health Interview Survey suggests a higher prevalence of coexisting developmental disabilities in CWS. The existence of coexisting disabling developmental conditions should be considered as part of an overall management plan for CWS.