Self-Protection Versus Disease Avoidance

摘要: Predators and pathogens are powerful natural selection tools that influence the evolution of two domain-specific management systems: self-protection and disease avoidance. Both systems are activated by specific ecological conditions and protect humans against physical harm or disease transmission. The perception of predators is associated with fear, and the perception of disease-relevant animals is associated with disgust. Fear of predators negatively correlated with the perceived physical condition of participants, suggesting that the self-protection system is activated particularly in people who are more vulnerable to predation threat. People vulnerable to infectious diseases rated predators as more dangerous, suggesting that the disease-avoidance system activates behavior-reducing contact with harmful animals. Females had a higher score in terms of fear, disgust, and perceived danger in particular when considering animals that pose physical harm and/or a disease threat. Our results support the adaptation view, suggesting that the self-protection and disease-avoidance systems are domain specific, and that both have been shaped by natural selection in order to protect humans against harmful animals or events.