In the context of the COVID-19 pandemic, it becomes essential to understand why people refuse or indefinitely delay vaccination. A new Polish study, conducted at the Jagiellonian University (Krakow, Poland) and the SWPS University of Social Sciences and Humanities (Wroclaw, Poland) and published in the journal Social Psychological Bulletin, brings up the impact of the active spread of attention-grabbing anti-vaccine arguments, as well as the overall distrust in the Big Pharma, science and health providers.
In their study, using data from a total of 492 participants, who have self-identified as either ambiguous towards or opposing vaccination, retin a hair loss the research team, led by Dr. Katarzyna Stasiuk, conclude that vaccine deniers are mostly led by a generalized negative attitude to vaccines.
The arguments were collected during a conference, where people opposing the vaccination presented their stand on the subject. Curiously, even though they often reported their stance to be founded in their own or observed negative experience with vaccines, when asked about their reasoning, they were rather vague in their explanations. Many reported that they didn’t remember the source of information, while others attributed autism, allergies or children being sick to vaccines, despite the missing evidence of correlation.
Such instances can be explained with people’s tendency to remember negative reports, even if those have simply been read online.
“Confirmation bias consists of an individual actively seeking information consistent with their pre-existing hypothesis, and avoiding information indicative of alternative explanations,” say the researchers. “Therefore, a pre-existing negative attitude toward vaccines may cause individuals to interpret negative symptoms as consequences of vaccines, further reinforcing the negative attitude.”
The research team also reminds that when given similar information from multiple sources, people tend to forget how they have learned it, often confusing it with their own experience or those of their close ones. As a result, they could turn into yet another source of misinformation.
All in all, vaccine deniers believe that vaccines lead to serious negative side effects, don’t protect the individual and the society against infectious diseases, and are not sufficiently tested before introduction. Further, they are convinced that anti-vaccination leaders are better informed about vaccines than physicians, and that it is rather the former that act in the public interest.
Interestingly, when compared to the group who self-reported as vaccine-hesitant, opponents of vaccines were more inclined to believe that modern medicine is able to handle an epidemic.
Meanwhile, the vaccine-ambiguous participants in the survey were mostly confident in the efficacy of vaccines, as well as them being properly researched. However, they were still susceptible to the anti-vaccine movement’s statements about side effects and the “Big Pharma conspiracy”. Moreover, if presented with well-prepared arguments, they are likely to become vaccine deniers.
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