Partisans across many countries exaggerate outgroup hostility toward their ingroup

Evidence

Outgroup animosity is self-fulfilling Americans19, as well as participants across 26 countries29, hold exaggerated beliefs about how negatively their political outgroup feels about their ingroup. These exaggerated beliefs lead partisans to believe that the outgroup is motivated by the intent to purposefully obstruct political progress. What begins as a misperception about how negatively the outgroup feels soon turns into reality. — Rachel Hartman et al., Interventions to Reduce Partisan…, 75

Categorization

• QUESTION: The meta-analytic interpolation claim (line 19) plus cross-national data (line 29) — worth chasing the original sources for effect sizes if the reader is benchmarking the PNAS finding.
• SHARE: The 26-country replication of US misperception findings is a strong stat for someone working on depolarization or political psychology.
• XREF: connects to: Partisans hold systematic misperceptions that exaggerate their opponents’ extremism and hostility. — Rachel Hartman et al., Interventions to Reduce Partisan…, 30; Partisans massively overestimate disliked traits in the opposing party — Rachel Hartman et al., Interventions to Reduce Partisan…, 32; Cross-partisan exposure backfires because the outgroup posts encountered are mostly derogatory — Sander van der Linden, Foolproof: Why Misinformation Infects…, 458 (+3 more)

Broader Connections

• Cross-partisan exposure backfires because the outgroup posts encountered are mostly derogatory #exemplifies (0.82) — Sander van der Linden, Foolproof, 458
• Partisan polarization now extends to social life and fear of the other party #corroborates (0.80) — Russell Muirhead and Nancy L. Rosenblum, A Lot of People Are Saying, 229
• Perceived ideological extremity of outgroups drives a self-reinforcing cycle of polarization #expands (0.78) — Rachel Hartman et al., Interventions to Reduce Partisan…, 74
• Each side’s perception of the other’s hostility rested on concrete grievances #qualifies (0.75) — Samuel P. Huntington, The Clash of Civilizations and the…, 599