I heard this from someone:

When students were assigned to defend a stance opposite to their own held view in a debate, their personally held views were permanently altered, closer to center from their originally held views.

To my knowledge this phenomenon was studied in a university somewhere, but I can't seem to find reference to it. Can anyone confirm for me that this is in fact true? Can anyone point me in the right direction so that I could cite the study in an essay?

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