What is a defining characteristic of autism?

Ritualistic behaviors and self-absorption are key characteristics often seen in individuals on the autism spectrum. This defining characteristic reflects the tendency of many individuals with autism to engage in repetitive behaviors, routines, or rituals, which can provide them with a sense of stability and comfort. Additionally, self-absorption may manifest as a challenge in social communication and interaction; individuals may focus more on their own interests and stimuli rather than engaging with others.

In contrast, the other options present traits that do not align with the common characteristics of autism. For instance, increased interest in social activities is typically not seen in individuals with autism, who may struggle more with social interactions than others. Similarly, overly extroverted communication contradicts the often more reserved or distinct communication styles found in those on the autism spectrum. Lastly, while some individuals with autism do experience delays in developmental milestones, this is not universally applicable and does not encapsulate the defining characteristics of autism as effectively as ritualistic behaviors and self-absorption.