Mental imagery may hold surprising power over vaccination decisions during a critical health window. When pregnant women spontaneously visualize negative scenarios about vaccines—formed through personal experiences, news coverage, or social media—these mental pictures appear to influence their willingness to accept recommended immunizations beyond conscious reasoning alone.
Researchers tracked 411 pregnant women in Western Australia, measuring both their spontaneous mental imagery about vaccines and their actual vaccination behaviors for influenza, pertussis, and COVID-19. Thirty-eight percent reported experiencing vivid mental images when considering vaccination risks, with most imagery skewing negative. These negative visualizations correlated with higher vaccine hesitancy for pertussis and influenza shots, even after accounting for stated intentions and anticipated regret about potential decisions.
This finding illuminates an underexplored psychological mechanism in health decision-making. While public health campaigns typically focus on factual information and risk-benefit calculations, the emotional visual processing that occurs below conscious awareness may substantially sway behavior. The research suggests that mental imagery operates as an independent pathway influencing vaccine acceptance, separate from traditional cognitive factors.
For clinical practice, these results highlight the need to address not just what pregnant women think about vaccines, but how they mentally picture vaccination scenarios. Healthcare providers might benefit from exploring patients' spontaneous imagery and potentially helping reframe negative visualizations with more balanced mental representations. However, this single-center study requires replication across diverse populations before broader implementation of imagery-based interventions.