Like I said, its been a while since I read up on the literature, but when I did (more then 10 years ago) there were similar models backed most of them not backe

Like I said, its been a while since I read up on the literature, but when I did (more then 10 years ago) there were similar models backed most of them not backed up by any evidence, but those that were usually had some flaws in the experimental design that made the results biased. E.g. they were asked to rate neutral images as positive or negative, some were primed with images of outgroup person while others with ingroup. The outgroup group would respond more negatively. But there is a problem with this design and they found out that it is not bias towards the outgroup that created the result. Maybe they have experiments that demonstrates (without a bias) that xenophobia is natural in humans, but I doubt it. I want to see some extraordinary evidence before I believe such an extraordinary claim.