Purpose: The current study addresses a gap in the literature regarding syntactic development of adolescent boys with fragile X syndrome (FXS) and Down syndrome (DS). Specifically, we ask whether syntactic skills plateau or continue to change during adolescence for these groups and whether the profile of syntactic change differs between boys with…

Purpose: Achieving behavioral independence is a key task of adolescent development. This 1 article of a companion set of 2 (the 2nd addressing the topic of parental perspectives) presents an investigation of the impact of language ability on independence. Method: Longitudinal and follow-up data from 120 adolescents with a history of specific…

Background: Research has consistently documented a relationship between phonological short-term memory skills (STM) and specific language impairment (SLI). This study reports on the development of phonological STM abilities over 3 years in 80 young adolescents with a history of SLI, investigating the nature of the relationship between phonological…