Background: Adolescent self-harm is a major public health issue internationally. Various factors associated with adolescent self-harm have been identified, including being bullied and experiencing mental health problems. Stuttering and speech sound disorder are associated with both of these factors. It was hypothesized that both stuttering and…

Background: Developmental stuttering is associated with increased risk of psychological distress and mental health difficulties. Less is known about the impact of other developmental speech problems on psychological outcomes, or the impact of stuttering and speech problems once other predictors have been adjusted for. Aims: To determine the impact…

Purpose: This prologue serves to introduce a research forum composed of studies that address the topic of stuttering in school-age children and adolescents. Researchers are encouraged to continue to build the knowledge base that sustains evidence-based practice in this area. Method: The nature of stuttering as it evolves from early childhood into…

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…

Clinical diagnostic procedures to distinguish stuttering from non-stuttering individuals partially rely on the observation of characteristics of stuttered words or syllables. The purpose of this study was to examine the sensitivity and specificity of such a procedure, and to describe the observed characteristics of stuttered words. Methods…

Purpose: The spatiotemporal index (STI) is one measure of variability. As currently implemented, kinematic data are used, requiring equipment that cannot be used with some patient groups or in scanners. An experiment is reported that addressed whether STI can be extended to an audio measure of sound pressure of the speech envelope over time that…

This study investigated whether syntactic complexity exerts an influence on the frequency of stuttering in the speech of seven adolescents who stuttered and seven who were normally fluent. Although normal disfluencies and errors in repetition accuracy increased as syntactic complexity increased, stuttering frequency did not appear to be affected…

A study of eight Dutch individuals (ages 14 to 56) who stutter found that adaptation of stuttering frequency during repeated readings may be a result of motor learning. Furthermore, during repeated readings, reductions in stuttering frequency were not related to reductions in the variability of acoustically derived measures of speech production.…

Background: The paper reports on a laboratory investigation of the effects of self-modelling on stuttering rate in adolescents and adults. Self-modelling refers to a therapeutic or training method, usually involving videotape, that uses exposure to oneself performing selected error-free behaviours as the conduit for promoting behaviour change.…

This issue contains eight articles that represent information on a variety of highly specialized topics involving communicative sciences. Articles include: (1) "The Reliability of the Kay Elemetrics Multidimensional Voice Program (MDVP) for Acoustic Analysis of the Normal Voice" (Ann Marie Cimino and Christine M. Sapienza), which focuses on the…