Video inoculation against election misinformation across 12 EU nations

Area of Science:

• Social Psychology
• Media Psychology
• Political Communication

Background:

• Prebunking interventions, particularly video-based ones, show promise in reducing susceptibility to misinformation.
• The effectiveness of prebunking in older demographics, diverse cultural contexts, and specifically for election-related misinformation requires further investigation.
• Large-scale prebunking campaigns are emerging as a strategy to combat widespread disinformation.

Purpose of the Study:

• To evaluate the effectiveness of video-based prebunking interventions against election misinformation across diverse European populations.
• To assess the impact of prebunking on viewers' ability to discern manipulation tactics and make informed sharing decisions.
• To explore demographic and national-level factors influencing prebunking effectiveness.

Main Methods:

• Conducted 13 cross-national surveys in 12 EU nations with 19,735 participants before the 2024 EU Elections.
• Tested three inoculation videos targeting common misinformation tactics: scapegoating, decontextualization, and discrediting.
• Measured improvements in manipulation and technique discernment, as well as sharing decisions, using pre- and post-exposure assessments.

Main Results:

• Video-based prebunking significantly improved discernment of manipulative content and tactics, and influenced sharing decisions across all surveyed nations.
• While effects were generally small (ds ≈ 0.08–0.38), they were statistically significant and consistent across surveys.
• Longer videos (50s) demonstrated more consistent improvements in overall discernment compared to shorter videos (20s), though both enhanced technique discernment.
• Country-level factors (e.g., education index) and socio-demographic variables (e.g., personal educational attainment) moderated intervention effects.

Conclusions:

• Scalable video-based inoculation interventions are effective in countering election misinformation across diverse national contexts.
• Future research should focus on optimizing prebunking strategies, including repeated exposure and context-specific messaging, to foster sustained resistance to misinformation.
• Understanding moderating factors is crucial for tailoring future prebunking campaigns to maximize impact in varied electoral and media environments.