Aggressive behaviour refers to any behaviour that has the potential to cause injury to another person. When we use the phrases ‘aggression’ or ‘aggressive behaviour’ throughout this website, we do not mean to imply that an individual with fragile X syndrome is intentionally trying to hurt another person.
Around 5 out of 10 individuals with fragile X syndrome will show aggressive behaviours, but are no more likely to display aggressive behaviour than other individuals with intellectual disability. Similarly to self-injurious behaviour, aggression is more common in males with fragile X syndrome than females.
Impulsivity has been identified as a risk factor for aggressive behaviour in fragile X syndrome.