In particular, the participants indicated how disgusted they felt by various activities that could result in an infection, such as accidentally touching another person’s bloody cut. The researchers analyzed data from a large cross-cultural survey that included measures of pathogen disgust sensitivity and attitudes toward gay men. However, this previous research involved mostly people from the USA and Canada.”
“Previous research into these explanations showed that people who have a stronger tendency to feel disgusted (people who are more disgust sensitive) tend to have more prejudice towards gay men and lesbian women. Another explanation is that people associate homosexuality with sexual behavior that they find disgusting,” Van Leeuwen said. “One explanation of why people might have negative views about homosexuality is that they associate gay men with infectious diseases, such as HIV or other sexually transmitted diseases. While the physical immune system evolved to defend against pathogens that have entered the body, some animals (including humans) also evolved a behavioral immune system that motivates them to avoid contact with other organisms that may carry infectious pathogens. The behavioral immune system appears to be one reason. From the perspective of heterosexual men, gay men are not competition on the mating market, so why the disapproval of their sexual preference? What is going on here?” But I did not understand why heterosexual males would benefit from negative attitudes and aggressive behaviors towards gay men. “I could understand explanations of romantic jealousy and intra-sexual competition for mates. “I became interested in prejudice towards gay men and lesbian women a couple of years after I became familiar with evolutionary psychology, maybe around 2010,” explained study author Florian van Leeuwen, an assistant professor at Tilburg University. The findings provide evidence that antigay prejudice is related in part to pathogen avoidance. Individuals who are more sensitive to disgust are more likely to hold negative attitudes towards gay men and lesbian women, according to new cross-cultural research published in the journal Group Processes & Intergroup Relations.