Background: There is empirical evidence that a developmental language disorder (DLD) in early childhood leads to behaviour problems. However, it is still not clear how changes in language proficiency in these children influence the presence of behaviour problems. Aims: The aim of this study is to examine if changes in language proficiency are…

Behavioral inflexibility (BI) has been highlighted to occur across genetic and neurodevelopmental disorders. This study characterized BI in two common neurogenetic conditions: Fragile X syndrome (FXS) and Down syndrome (DS). Caregivers of children with FXS (N = 56; with ASD = 28; FXS only = 28) and DS (N = 146) completed the Behavioral…

Background: The latter stages of dementia in individuals with Down syndrome are well documented; however, earlier cognitive and behavioural changes have only recently been described. Holland et al. suggested such early signs of dementia in this population are behavioural and are similar to those seen in frontotemporal dementia, but there is, as…

A study examined the relation between communication development and aberrant behavior in 13 preschool children with developmental disabilities. There was a strong inverse relation between communication ability and severity of aberrant behavior. Deficits in receptive language were more strongly associated with severe aberrant behavior, particularly…