Kate Christy recently published an article evaluating how admiration and memorability impact the processing of mammography PSAs. The research was published in the Journal of Health Communication (one of our favorite outlets!) and provides evidence that admired models have greater impact on intentions to screen. For example, participants who viewed PSAs featuring the story of Mary Nickles (pictured above) had higher screening intentions if they admired Mary.
Christy, K. R., Jensen, J. D., Sarapin, S. H., Yale, R. N., Weaver, J., & Pokharel, M. (2017). Theorizing the impact of targeted narratives: Model admiration and narrative memorability. Journal of Health Communication, 22(5), 433-441.