There's no gentle way to put it: People who give in to racism and prejudice may simply be dumb, according to a new study that is bound to stir public controversy.
The research finds that children with low intelligence are more likely to hold prejudiced attitudes as adults. These findings point to a vicious cycle, according to lead researcher Gordon Hodson, a psychologist at Brock University in Ontario. Low-intelligence adults tend to gravitate toward socially conservative ideologies, the study found. Those ideologies, in turn, stress hierarchy and resistance to change, attitudes that can contribute to prejudice, Hodson wrote in an email to LiveScience.
"Prejudice is extremely complex and multifaceted, making it critical that any factors contributing to bias are uncovered and understood," he said.
In another study, this one in the United States, Hodson and Busseri compared 254 people with the same amount of education but different levels of ability in abstract reasoning. They found that what applies to racism may also apply to homophobia. People who were poorer at abstract reasoning were more likely to exhibit prejudice against gays. As in the U.K. citizens, a lack of contact with gays and more acceptance of right-wing authoritarianism explained the link.
"The unique contribution here is trying to make some progress on the most challenging aspect of this," Nosek said, referring to the new study. "It's not that a relationship like that exists, but why it exists."
However, it's not all set in stone with everyone, apparently-
"Hodson was quick to note that the despite the link found between low intelligence and social conservatism, the researchers aren't implying that all liberals are brilliant and all conservatives stupid. The research is a study of averages over large groups, he said.
"There are multiple examples of very bright conservatives and not-so-bright liberals, and many examples of very principled conservatives and very intolerant liberals," Hodson said."