Studies on multiculturalism?

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Hey /pol/, I'm looking for scientific studies on the affects of multiculturalism in general. I'm talking about stuff like this

http://www.sciencedirect.com/science/article/pii/S0022103116300555

>The research involved three experiments. In the first, 152 college students were asked a series of questions about relationships, including how disgusted they felt about various configurations of interracial relationships and about their own willingness to have an interracial romance. The participants overall showed high levels of acceptance and low levels of disgust about interracial relationships, and pointed to a strong negative correlation between the two.

>Skinner said, participants showed higher levels of activation in the insula—an area of the brain routinely implicated in the perception and experience of disgust—while viewing images of interracial couples.

“That indicates that viewing images of interracial couples evokes disgust at a neural level,” Skinner said.

>Participants were quicker to associate interracial couples with non-human animals and same-race couples with humans.

>Overall, the current research provides evidence that bias against interracial romance is associated with disgust, that interracial couples actually elicit a disgust response among observers, and that these feelings of disgust translate into dehumanization of interracial couples. The current findings provide evidence that interracial couples are implicitly dehumanized, such that they are less readily associated with the category “human” than same-race couples (and more readily associated with the category “animal”).

I'm looking for more studies like this, that study the inherent racism within humans and the affects of multiculturalism upon society