Combating misinformation: A megastudy of nine interventions designed to reduce the sharing of and belief in false and misleading headlines

Researchers have tested a variety of interventions to combat misinformation on social media (e.g., accuracy nudges, digital literacy tips, inoculation, debunking). These interventions work via different psychological mechanisms, but all share the goals of increasing recipients’ ability to distinguish between true and false information and/or increasing the veracity of news shared on social media. The current megastudy with 33,233 US-based participants tests nine prominent misinformation interventions in an identical setting using true, false, and misleading health and political news headlines. We find that a wide variety of interventions can improve discernment between true versus false or misleading information during accuracy and sharing judgments. Reducing misinformation belief and sharing is a goal that is accomplishable through multiple strategies targeting different psychological mechanisms.