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; and (c) Is there a relationship between %SS and anxiety during standard and challenge phone calls? Method: Participants…

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…

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…

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…

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…

Purpose: Percentage of syllables stuttered (%SS) and severity rating (SR) scales are measures in common use to quantify stuttering severity and its changes during basic and clinical research conditions. However, their reliability has not been assessed with indices measuring both relative and absolute reliability. This study was designed to provide…

Purpose: Webcam treatment is potentially useful for health care in cases of early stuttering in which clients are isolated from specialized treatment services for geographic and other reasons. The purpose of the present trial was to compare outcomes of clinic and webcam deliveries of the Lidcombe Program treatment (Packman et al., 2015) for early…

Purpose: Stuttering varies between and within speaking situations. In this study, the authors used statistical process control charts with 10 case studies to investigate variability of stuttering frequency. Method: Participants were 10 adults who stutter. The authors counted the percentage of syllables stuttered (%SS) for segments of their speech…

Background: At present, percent syllables stuttered (%SS) is the gold standard outcome measure for behavioural stuttering treatment research. However, ordinal severity rating (SR) procedures have some inherent advantages over that method. Aims: To establish the relationship between Clinician %SS, Clinician SR and self-reported Speaker SR. To…

Purpose: This study investigated the relationship between self-reported stuttering severity ratings and educational attainment. Method: Participants were 147 adults seeking treatment for stuttering. At pretreatment assessment, each participant reported the highest educational level they had attained and rated their typical and worst stuttering…

Background: Although there are treatments that can alleviate stuttering in adults for clinically significant periods, in Australia there are barriers to the accessibility and availability of best-practice treatment. Aims: This parallel group, non-inferiority randomized controlled trial with multiple blinded outcome assessments investigated whether…

Purpose: To determine whether measures of stuttering frequency and measures of overall stuttering severity in preschoolers differ when made from audio-only recordings compared with audiovisual recordings. Method: Four blinded speech-language pathologists who had extensive experience with preschoolers who stutter measured stuttering frequency and…

A study investigated whether age, gender, period from onset to treatment, and stuttering severity related to the required treatment time of 250 preschoolers who completed the Lidcombe Program. Data indicate that, for a short period after stuttering onset, a short delay in treatment did not appear to increase treatment time. (Contains references.)…