Camouflaging in autism spectrum disorder: Examining the roles of sex, gender identity, and diagnostic timing.

Camouflaging in autism spectrum disorder refers to behaviors and/or strategies that mask the presentation of autism spectrum disorder features in social contexts in order to appear "non-autistic" (Attwood, 2007). Camouflaging modifies the behavioral presentation of core autism spectrum disorder features (e.g. social and communication differences), but the underlying autistic profile is unaffected, yielding a mismatch between external observable features and the internal lived experience of autism. Camouflaging could be an important factor in later diagnosis of individuals without co-occurring intellectual disability, especially among those designated female sex at birth. Little research to date has examined how gender identity impacts camouflaging, however. Furthermore, no study has compared groups that differ in diagnostic timing to directly investigate if later-diagnosed individuals show elevated camouflaging relative to those receiving an earlier diagnosis. We used the Camouflaging Autistic Traits Questionnaire subscales (Assimilation, Compensation, and Masking) and investigated the roles of sex, gender identity (gender diverse vs cisgender), and diagnostic timing (childhood/adolescent-diagnosed vs adult-diagnosed), and the interactions of these factors, in autistic adults ( = 502; ages 18-49 years). Main effects of sex, gender identity, and diagnostic timing were revealed. Autistic females reported more camouflaging across all three Camouflaging Autistic Traits Questionnaire subscales compared to males. Gender diverse adults reported elevated camouflaging on the Compensation subscale compared to cisgender adults. Adulthood-diagnosed individuals reported elevated Assimilation and Compensation compared to childhood/adolescence-diagnosed individuals. We discuss how the aspects of camouflaging may have unique implications for later diagnostic timing and for the intersection of neurodiversity and gender diversity.