Aims: To investigate the developmental trajectory of the rate and perceptual assessment of oral diadochokinesis (DDK) in typically developing children compared with adults. Also to examine the characteristics of DDK productions in children with speech sound disorders (SSD) and the relationship between DDK production and percentage of consonants…

Background: Phonetic transcription is a core skill of speech and language therapists/pathologists (SLT/Ps) for clinical assessment of speech sounds and/or errors, and linguists for investigation of phonetic phenomena in various languages; hence, it is included in the curriculum of the corresponding degree programme. Many experts and course…

Background: Recent evidence suggests that speech substantially changes in ageing. As a complex neurophysiological process, it can accurately reflect changes in the motor and cognitive systems underpinning human speech. Since healthy ageing is not always easily discriminable from early stages of dementia based on cognitive and behavioural…

Purpose: The current standard for clinical diagnosis of childhood apraxia of speech (CAS) is expert clinician judgment. The psychometric properties of this standard are not well understood; however, they are important for improving clinical diagnosis. The purpose of this study is to determine the extent to which experts agree on the clinical…

Background: Speech sound disorders (SSDs) are the most common form of communication disorders in children. SSD have an impact on children's abilities to make themselves understood to their listeners and can influence a child's social and emotional well-being as well as their academic achievements. Therefore, it is important to identify children…

Purpose: The purpose of this tutorial is to (a) provide an updated review of the literature pertaining to proposed early features of childhood apraxia of speech (CAS), (b) discuss the findings of recent treatment studies of infants and toddlers with suspected CAS (sCAS), and (c) present evidence-based strategies and tools that can be used for the…

Purpose: The purpose of this study was to (a) provide evidence for a theoretical model of between-language interaction in bilingual phonological production through the examination of substitution error patterns and to (b) provide developmental data on bilingual children with and without speech sound impairments for use in clinical assessment and…

Purpose: The purpose of this study was to investigate the presence and progression of self-perceived speech and swallowing impairments in newly diagnosed people with Parkinson's disease (PD) longitudinally across 6 years. Method: Longitudinal data from the Parkinson's Progression Markers Initiative were analyzed across six consecutive years in a…

Background: Children with speech sound disorders (SSD) form a heterogeneous group, with respect to severity, etiology, proximal causes, speech error characteristics, and response to treatment. Infants develop speech and language in interaction with neurological maturation and general perceptual, motoric, and cognitive skills in a social-emotional…

Background: 'Speech sound disorder' is an umbrella term that encompasses dysarthria, articulation disorders, childhood apraxia of speech and phonological disorders. However, differential diagnosis between these disorders is a persistent challenge in speech pathology, as many diagnostic procedures use symptom clusters instead of identifying an…

Background: Speech in individuals with cleft lip and/or palate (CLP) is a complex myriad of presenting symptoms. It is uniquely associated with the structural difference of velopharyngeal insufficiency (VPI), together with a wide and heterogeneous range of other aetiologies which often co-occur. The nature of the speech sound disorder (SSD)…

Clinical Question: Would a bilingual preschooler with suspected speech sound disorder (P) be more accurately diagnosed via an assessment approach that integrates sociolinguistic information (I) or via standardized assessment with traditional scoring modifications (C) as shown by diagnostic compatibility with the converging concern approach (O)?…

Background: The publication of phase 2 of the CATALISE project in 2017 clarified terminology for children with developmental language disorder (DLD) or delay but unintentionally muddied the water for children with unintelligible speech. A diagnostic label of DLD (phonology) indicates poor prognosis and phonological disorder that persists into…

There is increasing literature showing that the presentation of Autism Spectrum Disorder (ASD) could be different according to the sex of the patient. Through the analysis of the Autism Diagnostic Interview Revised interview results of a study group consisting of 56 preschool children diagnosed with ASD potential differences in the presentation of…

Purpose: The purpose of this study was to synthesize the methodological variability in the speech perception literature for school-age children with residual speech sound disorder (RSSD), with the primary intention of using the existing knowledge to inform clinical decisions and optimize treatment outcomes for children. Method: Ten electronic…