Knowledge overconfidence is associated with anti-consensus views on controversial scientific issues

Area of Science:

• Social Psychology
• Science Communication
• Public Health Policy

Background:

• Public opposition to scientific consensus poses significant risks, evident in vaccine hesitancy and resistance to climate change policies.
• Understanding the relationship between public knowledge, perceived knowledge, and opposition to scientific consensus is critical for addressing societal challenges.

Purpose of the Study:

• To investigate the interplay between opposition to scientific consensus, objective knowledge, and subjective knowledge across various scientific issues.
• To examine these relationships in the context of climate change, vaccine acceptance, and COVID-19 mitigation measures.

Main Methods:

• Analysis of five studies examining public attitudes towards scientific consensus on seven critical issues.
• Assessment of objective knowledge (what people know) and subjective knowledge (what people think they know).
• Inclusion of data on attitudes toward COVID-19 vaccines and mitigation strategies.

Main Results:

• Individuals with the highest levels of opposition to scientific consensus demonstrated the lowest levels of objective knowledge.
• Conversely, those most opposed exhibited the highest levels of subjective knowledge, believing they were more informed than they were.
• This inverse relationship between objective and subjective knowledge was consistent across studied scientific issues and public health measures.

Conclusions:

• The findings highlight a significant disconnect between perceived and actual knowledge among those opposing scientific consensus.
• Implications suggest a need for tailored communication strategies for scientists, policymakers, and communicators to bridge this knowledge-belief gap.
• Addressing overconfidence in misinformation is key to improving public understanding and acceptance of scientific consensus.