Sensitizing the Behavioral-Immune System: The Power of Social Pain

People who believe they are invulnerable to infectious diseases often fail to protect themselves against the disease threats that others pose to them. The current paper hypothesizes that social pain—the experience of feeling interpersonally hurt or rejected—can sensitize the behavioral-immune system by giving people added reason to see others as worthy of protecting themselves against. We obtained four daily diary samples involving 2,794 participants who reported how hurt/rejected they felt by those they knew, how personally concerned they were about the spread of illness/COVID-19, and how vigilantly they engaged in self-protective behaviors to safeguard their health each day. An integrative data analysis revealed robust evidence that people who believed they were invulnerable to infectious disease engaged in more concerted efforts to protect themselves against the greater daily risk of contracting COVID-19 when being in acute social pain gave them added reason to see others as harmful to them.