Abstract
Autistic adults experience greater rates of anxiety and depression compared to the general population. Compassion-focused therapy interventions, aimed at promoting self-compassion capabilities, have shown efficacy in improving mental health outcomes in autistic and non-autistic samples suffering from self-criticism that contribute to difficulties in emotion regulation. We explored the experiences of autistic adults during a brief one-week online self-compassion exercise to evaluate it's feasibility and acceptability through self-report, experience sampling, and parasympathetic activity measured via HRV. Pre- to post-intervention comparisons showed significant improvement in trait self-compassion and fears of self-compassion, but this did not extend to acute measures of psychological distress (depression, anxiety, and stress) nor difficulties in emotion regulation. HRV measures displayed significant increases during self-compassionate practice, although there were no significant changes in physiological reactivity pre- to post-intervention. Experience sampling measures found that whether participants acted on opportunities to be self-compassionate was predictive of concurrent evaluations of affective system activation, whereby acting self-compassionately was associated with greater reported activation of the soothing affective system. Together, our findings support the use of multimodal approaches to investigating the accessibility and efficacy of compassion-focused approaches to resolving emotional difficulties experienced by autistic adults.