Our race radar isn't fixed. People subconsciously identify others more strongly by how they work together than by their skin colour. David Pietraszewski and colleagues at the University of California Santa Barbara introduced 1272 people to avatars that worked for one of two charities. Each charity had two white and two black avatars of the same gender. The participants were first given 24 statements about charity work, each accompanied by the face of one of the eight avatars. Some hinted at the charity they worked for, whereas others were general. Next, the participants were shown just the statements and were asked to match them to the correct avatar.
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