The Psychology Behind COVID-19 Misinformation

Published on September 8, 2025 | By Dr. Emma Thompson

The COVID-19 pandemic unleashed not only a health crisis but also an unprecedented wave of misinformation and conspiracy theories. Understanding why people become susceptible to false health information during crises is essential for developing effective public health communication strategies and building community resilience against future misinformation campaigns.

The Perfect Storm for Misinformation

The pandemic created ideal conditions for the spread of false information. Uncertainty about a novel virus, rapidly changing health guidelines, economic stress, and social isolation combined to create a psychological environment where conspiracy theories could flourish.

Our research at Merri Mortar identified several key factors that made Australians particularly vulnerable to COVID-19 misinformation:

  • Information overload: The constant stream of conflicting reports overwhelmed people's ability to process information critically
  • Lack of control: Feeling powerless against the virus made alternative explanations appealing
  • Trust erosion: Inconsistent messaging from authorities damaged public confidence in official sources
  • Social isolation: Reduced face-to-face interaction made online echo chambers more influential

Psychological Vulnerability Factors

Not everyone is equally susceptible to health misinformation. Our studies have identified several psychological factors that increase vulnerability to false COVID-19 information:

Anxiety and Fear: High levels of pandemic-related anxiety can impair critical thinking abilities. When people are fearful, they're more likely to accept information that seems to provide certainty or control, even if that information is false. We found that individuals with higher anxiety scores were 40% more likely to share unverified health claims.

Conspiratorial Thinking: People with pre-existing tendencies toward conspiracy thinking were more susceptible to COVID-19 misinformation. This includes individuals who score high on measures of distrust in institutions, preference for simple explanations, and belief in hidden patterns of control.

Health Anxiety: Paradoxically, people with high health anxiety were both more likely to follow public health measures and more likely to believe in alternative health conspiracies. This suggests that health anxiety creates a vulnerable state where people seek multiple sources of control over health outcomes.

Cognitive Biases in Health Information Processing

Several cognitive biases played crucial roles in the spread of COVID-19 misinformation:

Confirmation Bias: People actively sought information that confirmed their existing beliefs about the pandemic while avoiding contradictory evidence. This was particularly problematic when initial skepticism about lockdowns or vaccines led people to seek out increasingly extreme anti-establishment content.

Availability Heuristic: Dramatic anecdotes and emotional stories about vaccine side effects or alternative treatments became overrepresented in people's risk assessments because they were more memorable and emotionally impactful than statistical evidence.

Illusory Correlation: People incorrectly perceived relationships between unrelated events, such as assuming that temporal proximity between vaccination and unrelated health events indicated causation.

Social and Cultural Factors

Individual psychology doesn't operate in a vacuum. Several social and cultural factors amplified the psychological vulnerabilities:

Community Identity: In some Australian communities, skepticism toward public health measures became part of group identity. Rejecting mainstream health advice served as a way to maintain belonging within certain social networks.

Political Polarization: Health measures became politicized, with support for or opposition to COVID-19 policies serving as markers of political identity rather than evidence-based health decisions.

Alternative Health Communities: Pre-existing alternative health communities provided ready-made networks for distributing COVID-19 misinformation, with trusted community leaders lending credibility to false claims.

The Role of Emotional Reasoning

One of the most significant findings from our research is the extent to which emotional reasoning overrode logical evaluation of health information during the pandemic. When people felt that official health measures didn't align with their emotional needs – for connection, autonomy, or certainty – they were more likely to accept alternative explanations that provided emotional satisfaction.

For example, conspiracy theories that blamed the pandemic on deliberate manipulation provided a sense of agency and understanding that was psychologically more satisfying than accepting the uncertainty and randomness of a novel virus emerging from natural processes.

Interventions and Solutions

Understanding the psychological roots of health misinformation vulnerability allows us to develop more effective interventions:

Addressing Emotional Needs: Public health communication must acknowledge and address the emotional needs that conspiracy theories fulfill. This includes providing clear explanations of uncertainty, acknowledging valid concerns, and offering concrete ways for people to feel agency in protecting their health.

Building Trust Gradually: Trust in health authorities must be rebuilt through consistent, transparent communication that acknowledges mistakes and uncertainties while emphasizing areas of scientific consensus.

Community-Based Approaches: Working with trusted community leaders and organizations to distribute accurate health information can be more effective than top-down messaging from distant authorities.

Psychological Inoculation: Teaching people about the psychological tactics used in health misinformation can help build resistance to false claims before exposure occurs.

Lessons for Future Pandemics

The COVID-19 infodemic has provided valuable lessons for managing health misinformation in future crises:

  • Early, consistent communication prevents information vacuums that misinformation can fill
  • Acknowledging uncertainty builds trust rather than undermining it
  • Cultural and community factors must be considered in health communication strategies
  • Mental health support during crises can reduce vulnerability to misinformation
  • Building media literacy and critical thinking skills before crises occur is essential

Moving Forward

The psychological factors that made people vulnerable to COVID-19 misinformation haven't disappeared with the pandemic. Economic uncertainty, social fragmentation, and institutional distrust continue to create conditions where health misinformation can flourish.

At Merri Mortar, we're committed to continuing our research into the psychology of health misinformation while developing practical interventions that address both the cognitive and emotional factors that make people vulnerable to false health claims. By understanding these human factors, we can build more resilient communities that are better equipped to navigate future health challenges with accurate information and critical thinking.

The fight against health misinformation is ultimately a fight for public health itself. By addressing the psychological roots of misinformation vulnerability, we can create a healthier, more informed society that's better prepared for whatever health challenges the future may bring.

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