Background: Adults with intellectual disability (ID) are at high risk of exhibiting challenging behaviors, especially those with autism spectrum disorder (ASD). There are clinical and transdiagnostic variables that are largely related to the existence of these behaviors, and it is necessary to know the particularities of their role in people with…

Autistic people experience a higher prevalence of self-harming behaviours than do the general population. Self-harm remains a stigmatised topic, and until recently, self-harming behaviours in autism were considered to be limited to self-injurious behaviours experienced by intellectually impaired autistic children and not to be experienced by…

Background: Aggressive behaviour (AB) and non-suicidal self-injury (NSSI) are common in people with mild intellectual disability or borderline intellectual functioning, leading to adverse consequences for themselves and those around them. Method: We investigated the relationship between AB (both total and physical in particular) and NSSI and risk…

Background: Callous-unemotional traits (CUT) are an antisocial personality trait, which can be present in people with autism spectrum disorder (ASD), especially in relation to difficulties in empathy. These traits are related to challenging behaviors, such as aggressive behavior, which may occur in people with ASD. Method: This study aimed to…

This study aimed at analyzing the differences in challenging behaviors between adults with intellectual disability and ASD and those who only had intellectual disability, as well as to explore associations between transdiagnostic and clinical variables to these differences. Therapists and educators of 163 adults with intellectual disability (83…