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> That’s why when psychologists want to jump-start friendship in the lab

...wait, we can do what now?

Yes. And the author provides both a cite for an academic publication as well as one from popular media. (And it's not exactly new either - the paper was published in 97).

TIL we also can jump-start outgroup formation in the lab: https://en.wikipedia.org/wiki/Minimal_group_paradigm

(or should I have learned it much earlier? https://en.wikipedia.org/wiki/The_Sneetches_and_Other_Storie... )

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