Social Connectedness and Loneliness Mediate the Association Between Autistic Traits and Internalizing Symptoms Among Young Adults.

Adults with autism and subclinical autistic traits report greater internalizing problems than their peers, but the psychological processes underlying these associations are not well understood. The current study used structural equation modeling to examine whether social experiences (social connectedness and loneliness) mediate the link between autistic traits and internalizing symptoms among 821 college students. Those with higher total Broader Autism Phenotype Questionnaire (BAPQ) scores reported lower social connectedness, which related to greater loneliness, and, in turn, greater anxious and depressive symptoms. Relations with specific BAPQ subscales were also examined. Results indicate that, among young adults, stronger subclinical autistic traits relate to greater mental health and social difficulties and point to the important role of social experiences in mental health adjustment.