Depolarization interventions barely raise out-party warmth and show no gains from repetition.

Evidence

Depolarization interventions only modestly increase out-party warmth, but do not affect other attitudes and do not increase in effectiveness with repetition. Plot shows average treatment effects for discrete numbers of interventions relative to 0 treatments (in blue) and to 1 treatment (in orange). 95% CIs. n = 2,284 respondents. — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard, 59

Categorization

• corroborated: 2 independent passages support this claim — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard: Evaluating…, 59
• XREF: connects to: Depolarization interventions produce only modest temporary effects on partisan animosity. — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard: Evaluating…, 3; Even ideal depolarization gains barely move downstream democratic attitudes. — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard: Evaluating…, 40; Stacking multiple depolarization interventions does not amplify their effect on out-party warmth. — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard: Evaluating…, 61 (+4 more)

Broader Connections

• Stacking multiple depolarization interventions does not amplify their effect on out-party warmth. #expands (0.90) — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard, 61
• Depolarization interventions produce small, decaying effects that fail to scale or shift downstream attitudes #expands (0.88) — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard, 18
• Dialogue-based depolarization interventions produce small, short-lived effects that fail to scale. #qualifies (0.85) — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard, 8
• Modest affective depolarization gains fail to shift downstream attitudes and behaviors. #expands (0.82) — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard, 41
• Depolarization interventions work in lab settings but fall short of reversing societal polarization. #qualifies (0.78) — Derek E. Holliday, Yphtach Lelkes, and Sean J. Westwood, Why Depolarization Is Hard, 73