Quotes by David A. Curtis

“If the emotion of disgust is an evolved defense against disease, several predictions follow. One is that disgust should be evoked most strongly by disease-carrying substances. The second is that these disgust elicitors should be universal across cultures. Empirical research supports both predictions (Curtis & Biran, 2001). People from cultures ranging from the Netherlands to West Africa find foods potentially contaminated by parasites or unhygienic preparation to be exceptionally disgusting. Examples are rotting flesh, dirty food, bad-smelling food, food leftovers, moldy food, a dead insect in food, and witnessing food preparation by someone with dirty hands. Foods that have had contact with worms, cockroaches, or feces evoke especially strong disgust reactions. A third prediction is that the disgust should activate the immune system. One study found that showing people images of contaminated food actually elevated their body temperature”