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  "retrievedAt": "2026-07-16T18:21:30.471Z",
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    "text": "Individual-level causal effects of algorithmic animosity amplification on affective polarization, operating through a mechanism present on multiple platforms reaching a supermajority of US adults, make it plausible — though not formally demonstrated — that the population-level contribution exceeds 10% of observed affective polarization growth."
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