The average full-scale IQ of individuals with XYY syndrome falls within the Average range, typically between 90-100.
While individuals with XYY syndrome, diagnosed prenatally or through newborn screening, exhibit cognitive abilities within the average range, their IQ distribution tends to be shifted slightly lower compared to the general population. This means that while they generally fall within the normal range, there is a tendency towards the lower end of "average". It is important to emphasize that this is an average and significant variability exists among individuals with XYY syndrome. Many individuals with XYY syndrome have IQs within the typical range of the general population.
It's also important to note that early intervention and appropriate educational support can significantly impact cognitive development in individuals with XYY syndrome, helping them reach their full potential.
