Background: Speech sound disorders (SSDs) in children are heterogeneous. Differentiating children with SSDs into distinct subtypes is important so that each child receives a treatment approach well suited to the particular difficulties they are experiencing. Aims: To study the distinct underlying processes that differentiate phonological…

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…

Purpose: Phonological processing skills, or using phoneme knowledge to process language, in preschool- and kindergarten-age children are an important indicator of children's future reading abilities. However, assessing phonological processing skills can be difficult in children with speech sound disorders because scoring often requires that…

Prevalence of hearing loss in children with autism spectrum disorder (ASD) is uncertain, as it is more challenging to assess hearing function in children with developmental difficulties (DD). We aimed to determine the prevalence and profiles of hearing loss in preschool children with ASD in a Southeast-Asian population who passed newborn hearing…

The effectiveness of education and upbringing of children with hearing loss who are placed in special and mixed groups remains an important issue. The study aims to establish mixed groups consisting of both healthy children and children with hearing loss, and subsequently evaluate and compare their cognitive and mental development across different…

The study described in this article evaluates the effectiveness of methods of improving phonetic, grammatical, and syntactic skills in children with general speech underdevelopment in a bilingual environment. The method is based on a theoretical study of severe speech disorders, a structural analysis of linguistic samples, and a comparative study…

Purpose: The study's primary aims were to describe the long-term speech outcomes for adolescents and young adults with a history of childhood apraxia of speech (CAS) and to examine the association of persistent speech sound errors with measures of literacy skills, phonological processing, motor speech production, and parent report of early motor…

Purpose: Pitch variations (tone productions) have been reported as a measure to differentiate Cantonese-speaking children with and without childhood apraxia of speech (CAS). This study aims to examine fundamental frequency (F0) changes within syllables and the effects of syllable structure, lexical status, and syllable positions on F0 in…

Background: Children with phonological impairment present with pattern-based errors in their speech production. While some children have difficulties with speech perception and/or the establishment of robust underlying phonological representations, the nature of phonological impairment in children is still not well understood. Given that…

Purpose: The purpose of the study was to investigate child- and intervention-level factors that predict improvements in functional communication outcomes in children with motor-based speech sound disorders. Method: Eighty-five preschool-age children with childhood apraxia of speech (n = 37) and speech motor delay (n = 48) participated.…

Background: Speech sound disorders (SSDs) are broadly defined as difficulty producing speech sounds in childhood. Reported prevalence of SSD varies from 2.3% to 24.6%, depending on how SSD is defined and the included age range. SSDs that do not resolve before age 8 can have a lasting impact on a child's academic achievements. The intensity of…

Purpose: Speech and language disorders can negatively affect preschool children's communicative participation skills. Focus on the Outcomes of Communication Under Six-34 (FOCUS-34) is a valid and reliable scale that evaluates communicative participation in preschool children with speech and language disorders. This study aimed to establish the…

Background: Phonological difficulties are prevalent in children with speech and/or language disorders and may hamper their later language outcomes and academic achievements. These children often form a significant proportion of speech and language therapists' caseloads. There is a shortage of information on evidence-based interventions for…