Does Camouflaging Cause Reduced Quality of Life? A Co-Twin Control Study.

Camouflaging has been proposed to have a detrimental effect on quality of life, yet previous research has not accounted sufficiently for potential confounding by genetic and shared environmental factors. The current study utilized a co-twin control design providing stringent control for a range of confounders to investigate the hypothesis that camouflaging autistic traits has a negative impact on quality of life. The sample included 140 individual twins from 42 monozygotic (MZ) and 28 dizygotic (DZ) twin-pairs, enriched for participants with neurodevelopmental conditions including 22 autistic participants. All twins provided self-reports of camouflaging and quality of life. Autistic participants and specifically autistic females displayed increased camouflaging behaviors compared to non-autistic participants. Across the sample, higher levels of camouflaging were associated with reduced quality of life, surviving adjustment for confounding effects of autistic traits, ADHD, sex, and age. Within DZ- as well as MZ-pairs, which provide the highest level of control for unmeasured confounders, twins who camouflaged more reported lower quality of life compared to their co-twins, consistent with a causal influence of camouflaging on quality of life. Our results strengthen previous claims purporting camouflaging behaviors as a risk factor for reduced quality of life.