Background: Neurofibromatosis type 1 (NF1) is an autosomal-dominant neurocutaneous disorder with an estimated prevalence of two to three cases per 10 000 population. While the physical characteristics have been well documented, speech disorders have not been fully characterized in NF1 patients. Aims: This study serves as a pilot to identify key…

This study reports the results of an investigation of public awareness and knowledge of stuttering in Rio de Janeiro, Brazil. A total number of 606 street recruited respondents answered questions on various aspects of stuttering, including prevalence, onset, gender distribution, occurrence in different cultures, cause, treatment, intelligence, and…

This book contains contributions by scholars working on diverse aspects of speech who bring their findings to bear on the practical issue of how to treat stuttering in different language groups and in multilingual speakers. The book considers classic issues in speech production research, as well as whether regions of the brain that are affected in…

The present study investigated the dysfluencies in the speech of nine French speaking individuals with fragile X syndrome. Type, number, and loci of dysfluencies were analysed. The study confirms that dysfluencies are a common feature of the speech of individuals with fragile X syndrome but also indicates that the dysfluency pattern displayed is…

This study investigated listeners' perception of the speech naturalness of people who stutter (PWS) speaking under delayed auditory feedback (DAF) with particular attention for possible listener differences. Three panels of judges consisting of 14 stuttering individuals, 14 speech language pathologists, and 14 naive listeners rated the naturalness…

The characteristics of various genetic syndromes have included "stuttering" as a primary symptom associated with that syndrome. Specifically, Down syndrome, fragile X syndrome, Prader-Willi syndrome, Tourette syndrome, Neurofibromatosis type I, and Turner syndrome all list "stuttering" as a characteristic of that syndrome. An extensive review of…

In order to test the hypothesis that closeness to the listener's native language is a determining factor when identifying stuttering in an unfamiliar language, three panels of different linguistic background were asked to make judgements of stuttering in a sample of Dutch speakers. It was found that a panel speaking Dutch and a panel speaking…

The Behavior Checklist, a self-report test procedure, was administered to 42 adults who stutter and 76 who do not in order to investigate the number, frequency of usage, type and nature of the responses that they reportedly employ to cope with the anticipation and/or presence of speech disruption. As a group, the participants who stutter reported…

Purpose: To investigate the effect of repeated exposure to delayed auditory feedback (DAF) during a 3-month period outside a clinical environment and with only minimal clinical guidance on speech fluency in people who stutter. Method: A pretest-post-test design was used with repeated exposure to DAF during 3 months as the independent variable.…

This study investigated the disfluencies and phonic tics in an 18- year-old male with Tourette syndrome before and after a 3-week period of speech therapy. The subject's speech pattern did not completely conform to the classic pattern of stuttering but bore more resemblance to cluttering. A limited number of therapy sessions resulted in a…

A panel of speech professionals was randomly presented with speech samples from four neurogenic and four developmental stutterers and was asked to classify them accordingly without any patient knowledge. Results support the view that, based on the patient's verbal output only, it is difficult to distinguish between neurogenic and developmental…

The present study investigated how well individuals knowledgeable about stuttering are able to make disfluency judgments in clients who speak another language than their own. Fourteen native speakers of Brazilian Portugeuse identified and judged stuttering in Dutch speakers and in Portugeuse speakers. Fourteen native speakers of Dutch identified…

The present study investigated the language familiarity hypothesis formulated by Mackay [(1970). How does language familiarity influence stuttering under delayed auditory feedback? "Perceptual and Motor Skills", 30, 655-669] that bilinguals speak faster and stutter less under delayed auditory feedback (DAF) when speaking their more…

A survey of 128 females (ages 2-58) with Turner syndrome found almost one quarter were receiving or had received treatment for stuttering, articulation problems, and/or delayed language development, with the latter two disorders being checked most frequently. Only 4 or the 68 individuals receiving growth hormone treatment reported voice changes.…