From the second year of life, children with typical development (TD) demonstrate the ability to form word-word relations. However, this ability has received little attention in children with Down syndrome (DS). We investigated their ability to establish associative relationships between words that tend to occur in the same context. Two groups of…

Children with Down syndrome (DS) are at higher risk for both delayed expressive language and poor speech intelligibility. The current study utilized the quantitative automated language environment analysis (LENA) to depict mother and child vocalizations and conversational patterns in the home of 43 children with DS, chronologically aged 24-64…

Children with Down syndrome (DS) and cerebral palsy (CP) are at risk of remaining pre-symbolic in their communication and play for prolonged periods. The aim of this study was to explore the early communication and play of children with DS and with CP who communicated at the pre-symbolic stage, and to determine the association between these…

Background: Research findings on vocabulary development in children with Down syndrome are inconsistent. This study aimed to analyse the developmental trend of vocabulary growth in children with Down syndrome and the relationships between vocabulary and chronological and developmental age. Method: Children's vocabulary size was assessed by a…

Background: Down syndrome (DS, OMIM #190685) is the most commonly identified genetic form of intellectual disability with congenital heart defect (CHD) occurring in 50% of cases. With advances in surgical techniques and an increasing lifespan, this has necessitated a greater understanding of the neurodevelopmental consequences of CHDs. Herein, we…

The emergence of the Down syndrome (DS) behavioural phenotype during early development may be of great importance for early intervention. The main goal of this study was to investigate the good-imitator-poor-talker developmental profile in DS at preschool age. Twenty children with Down syndrome (DS; mean nonverbal mental age NMA 1 y10 m) and 15…

Background: It is generally assumed that children with Down syndrome (DS) present a deficit in lexical production relative to their cognitive abilities. However, the literature on this topic has recently shown several contradictory results. In addition, most studies only consider vocabulary production in its vocal modality. However it is also…

Background: Children with Down's syndrome seem to show a preference for the use of gestural rather than vocal productions during the first stages of language development. This "gestural advantage" could actually be due to a developmental strategy used to compensate the difficulties in verbal production that are typical of language…

Children with Down syndrome (DS) have cognitive disabilities resulting from trisomy 21. Language-learning difficulties, especially expressive language problems, are an important component of the phenotype of this population. Many individuals with DS are born into bilingual environments. To date, however, there is almost no information available…

Evaluation of the validity of the MacArthur Communicative Development Inventory: Words and Sentences with 44 children with Down syndrome and 48 typically developing children established the validity of this parental measure of vocabulary development for children with Down syndrome and confirmed its validity for typically developing children.…