Prejudice Is Hard-wired Into The Human Brain, Says ASU Study

ScienceDaily, May 25

TEMPE, Ariz.—Contrary to what most people believe, the tendency to be prejudiced is a form of common sense, hard-wired into the human brain through evolution as an adaptive response to protect our prehistoric ancestors from danger.

So suggests a new study published by Arizona State University researchers in the May issue of the “Journal of Personality and Social Psychology,” which contends that, because human survival was based on group living, “outsiders” were viewed as—and often were—very real threats.

“By nature, people are group-living animals—a strategy that enhances individual survival and leads to what we might call a ‘tribal psychology’,” says Steven Neuberg, ASU professor of social psychology, who authored the study with doctoral student Catherine Cottrell. “It was adaptive for our ancestors to be attuned to those outside the group who posed threats such as to physical security, health or economic resources, and to respond to these different kinds of threats in ways tailored to have a good chance of reducing them.”

Unfortunately, says Neuberg, because evolved psychological tendencies are imperfectly attuned to the existence of dangers, people may react negatively to groups and their members even when they actually pose no realistic threat.

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“One important practical implication of this research is that we may need to create different interventions to reduce inappropriate prejudices against different groups,” says Neuberg.

For example, if one is trying to decrease prejudices among new college students during freshman orientation, different strategies might be used for bringing different groups together.

“For instance, given that whites stereotypically perceive blacks as threats to physical safety, it would be inadvisable to suggest a game of outdoor night-time basketball, given that darkness heightens people’s fear. Sharing a plate of nachos might be a better choice,” Cottrell says. “But if the aim is to reduce prejudice against gay men—viewed to pose a health treat because of association with AIDS, and thereby eliciting physical disgust—sharing finger food might not be a good idea.”

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