The influence of high autistic personality traits on the attribution of intentionality in typically developing individuals

The present study investigated the association between autistic personality traits and cognitive and affective Theory of Mind abilities, as well as whether intentionality attribution was atypical in individuals with autistic personality traits, such as in individuals with autism spectrum disorder, who tend to over-attribute intentions when facing accidental harm involving negative outcomes. One-hundred individuals performed tasks assessing autistic personality traits, Theory of Mind abilities, and provided intentionality judgments to scenarios characterized by side effects, which involved unintended negative outcomes as well. Results showed that autistic personality traits are associated with reduced cognitive and affective Theory of Mind abilities, as well as with increased intentionality attributions towards side effects. Reduced cognitive Theory of Mind ability mediates the relationship between autistic personality traits and over-attribution of intentionality, suggesting that individuals with autistic personality traits base their intentionality evaluations more on side effects than on agent’s intentions, as in autism spectrum disorder.