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When it comes to vaccines - why are people talking about 'Anecdotal evidence' ?

Overreliance on testimonies and personal experiences that contradict scientific research

Epistemic relativism, or “the subjectivity of how knowledge is determined”, is a philosophical view that social conventions determine scientific facts. In this viewpoint, facts are subjective and based on historical context, social and cultural norms, and individual standards. From this perspective, there is no objective knowledge. Several forms of epistemic relativism have been linked with vaccine opposition.

For some people, relativism implies that scientific evidence and subjective experiences are equally valuable in generating knowledge, or that personal experiences outweigh evidence. Common expressions of extreme relativism include:

  • Appeals to “maternal intuition”.
  • Invitations to “do your own research”.

This theme privileges anecdotes and personal experiences over scientific evidence, referring to first-hand ‘testimony’ and personal narratives as ‘evidence’ that vaccines are injurious and harmful.

Ligger det någon sanning i det?

Healthcare professionals and scientists must take into account personal preferences and experiences, as testimonials are often useful to discover possible effects that are uncommon or only occur within certain minority groups. Current medical practice is open to patients and their families actively participating in decision-making, which is important to ensure informed consent and achieve greater engagement with treatments.

Vad kan jag säga till någon som är fixerad vid denna övertygelse?

En dialog mellan patienter och hälso- och sjukvårdspersonal är mest produktiv om man förhåller sig empatiskt och ger patienten möjlighet att bekräfta de underliggande orsakerna till attityden, samt att man uttrycker förståelse för dessa. Därför är det viktigt att förstå attitydgrunden bakom personers uppenbara åsikter. Att bekräfta en persons underliggande attitydgrund innebär inte att vi måste instämma i detaljerna i deras argument. Vi kan till exempel bekräfta att:

Healthcare professionals and scientists must take into account personal preferences and experiences, as testimonials are often useful to discover possible effects that are uncommon or only occur within certain minority groups. Current medical practice is open to patients and their families actively participating in decision-making, which is important to ensure informed consent and achieve greater engagement with treatments.



Efter att ha lagt grunden genom denna (partiella) bekräftelse kan vi gå vidare till att korrigera patientens särskilda missuppfattning.

Overreliance on testimonies and personal experiences diverts us from a more general picture of medical treatments.

On the one hand, testimonials are often unreliable, because they are affected by a wide range of biases and misperceptions—for example, people can exaggerate, mistake correlation for causality, or even lie if they are motivated by vested interests.

On the other hand, the success of a medical treatment should be assessed through a cost/benefit calculation using large samples of patients, for which we have developed reliable statistical methods.

Thinking that extremely rare accidents are the norm could discourage us from engaging in virtually any activity, such as going to the park and eating at restaurants.

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