This study aimed to characterize the relationship between insistence on sameness (IS), executive functioning (EF) and anxiety among individuals with "PTEN" mutations and individuals with macrocephalic ASD. The sample included 38 individuals with "PTEN" mutation and ASD diagnosis ("PTEN"-ASD; M[subscript age] =…

The present investigation explored long-term relationships of behavioral symptoms of adolescents and adults with developmental disabilities with the mental health of their mothers. Fragile X premutation carrier mothers of an adolescent or adult child with fragile X syndrome (n = 95), and mothers of a grown child with autism (n = 213) were…

Background: Causal theories of dyslexia suggest that it is a heritable disorder, which is the outcome of multiple risk factors. However, whether early screening for dyslexia is viable is not yet known. Methods: The study followed children at high risk of dyslexia from preschool through the early primary years assessing them from age 3 years and 6…

Background: Prior research suggests that 60-74% of males and 16-45% of females with fragile X syndrome (FXS) meet criteria for autism spectrum disorder (ASD) in research settings. However, relatively little is known about the rates of clinical diagnoses in FXS and whether such diagnoses are consistent with those performed in a research setting…

Objective: To predict prodromal psychosis in adolescents with velocardiofacial syndrome (VCFS). Method: A total of 70 youth with VCFS, 27 siblings of youth with VCFS, and 25 community controls were followed from childhood (mean age = 11.8 years) into mid-adolescence (mean age = 15.0 years). Psychological tests measuring intelligence, academic…

Background: Although distinctive neuropsychological impairments have been delineated in children with chromosome 22q11 deletion syndrome (22q11DS), social skills and social cognition remain less well-characterised. Objective: To examine social skills and social cognition and their relationship with neuropsychological function/behaviour and…