Ratings of perceived stress in persons with aphasia by unfamiliar proxy reporters, proxy reporter self-reported perceived stress, stress contagion, and trait empathy

Background Accurate assessment of self-perceived stress is crucial because perceived stress has been linked to post-stroke depression in persons with aphasia and may be related to linguistic performance. Measuring self-reported perceived stress can be difficult in persons with aphasia (PWA) due to linguistic impairments; therefore, using proxy ratings could be an alternative. The accuracy of proxy ratings of perceived stress may be influenced by the proxy's familiarity with the person with aphasia and/or the condition of aphasia. Additionally, accuracy may be affected by genuine or mistaken signs of perceived stress in PWA due to linguistic behavioural markers common in both stress and aphasia. An observation of stress in a PWA may also trigger a stress response in the proxy. This physiological stress response, known as stress contagion, may be mediated by trait empathy and impact proxy ratings of perceived stress in PWA.