Purpose: This study investigated the language and cognitive skills of preschool children with sex chromosome trisomies (SCTs) with and without a co-diagnosis of developmental language disorder (DLD), considering possible differences between SCT types (i.e., XXX, XXY, and XYY). Method: Fifty-five children with a prenatally diagnosed SCT (19 XXX, 25…

3q29 deletion syndrome (3q29del) is associated with neuropsychiatric and neurodevelopmental phenotypes. We previously reported that graphomotor weakness is present in up to 78% of individuals with 3q29del. We have now explored nuances of the graphomotor phenotype and its association with other comorbidities in this population. Participants were…

The majority of the research examining children with Autism Spectrum Disorder (ASD) and Williams Syndrome (WS) focus on the social domain while few have examined cognitive style and emotionality. Accordingly, this current study assessed the day-to-day cognitive and behavioral functioning of school-age children with ASD, WS, and neurotypical…