The behavioural immune system and pandemic psychology: the evolved psychology of disease-avoidance and its implications for attitudes, behaviour, and public health during epidemic outbreaks
Mark Schaller, Damian R. Murray, Marlise K. Hofer
Abstract
This article provides an overview of the “behavioural immune system” – a suite of psychological mechanisms that complements immunological defences by motivating pre-emptive behavioural responses to infection threats – and summarises research documenting its implications for social attitudes and social behaviour. This summary focuses on four domains of phenomena: interpersonal interactions, stigma and prejudice, conformity, and political attitudes. Then, drawing on this conceptual and empirical background, the article discusses consequences that disease outbreaks (such as the COVID-19 pandemic) may have for individuals’ attitudes and actions, and the further consequences that these attitudes and actions might plausibly have for population-level epidemiological and public health outcomes.