Martin Hagger published an article in Annals of Behavioral Medicine on on a randomized controlled trial of an intervention to promote COVID-19 prevention behaviors using imagery, persuasive communication, and planning. This was with collaborators from Griffith University and University of the Sunshine Coast in Australia.
Smith, S. R., Hagger, M. S., Keech, J. J., Moyers, S. A., & Hamilton, K. (2022). Improving hand hygiene behavior using a novel theory-based intervention during the COVID-19 pandemic. Annals of Behavioral Medicine. https://doi.org/10.1093/abm/kaac041