Argument-based intervention as a way to reduce covid-19 unfounded beliefs and vaccination hesitancy

The aim of the experimental study was to verify the reduction of Covid-19 unfounded beliefs through arguments in favor of vaccination. The sample includes 720 participants recruited by Qualtrics (50% women, age: M = 38.8, SD = 10.90). The participants were equally and randomly divided into three groups. The control group was given the task of reading a neutral text about Norway. The first experimental group was provided with a debunking text that corrected popular misinformation and unfounded beliefs about vaccination against polio and vaccination against Covid-19. The second experimental group read the same text as the first, with two additional paragraphs addressing the motives and errors in the thinking of unfounded belief spreaders. The results confirmed that exposing the participants to arguments for vaccination reduces the endorsement of Covid-19 unfounded beliefs and increases the willingness to be vaccinated against Covid-19 disease.