The behavioural profile of children aged 1–5 years with sex chromosome trisomy (47,XXX , 47,XXY , 47,XYY )

Children with SCT have an increased risk of suboptimal neurodevelopment. Previous studies have shown an elevated risk for neurobehavioral problems in individuals with SCT. However, not much is known about neurobehavioral problems in very young children; knowledge that could help with early identification of children at risk for suboptimal development, and that could help establish targets for early intervention.