Component one: Literature review to understand issues pertinent to women presenting for breast re-screening. The review includes an examination of (1) studies measuring the prevalence of mammography rescreening; (2) studies exploring factors contributing to returning for repeat screening; and (3) studies examining what the factors and intervention strategies that facilitate or encourage women to return for repeat mammograms. Key words and parameters used: Key words: mammog$ and rescreen$, re-screen$, repeat screen$ re-attend$ reattend$. Limited to 1990-2005. Number of articles identified: 64 Component two: Formative research using focus groups to identify attitudes and beliefs regarding mammography. Results used to develop appropriate counterfactual messages for the project's intervention. Participant surveys, women 50-69 years of age. Component three: A community intervention consisting of two phases. Community Study 1 designed to test whether counterfactual messages resonated with the target audience (how this impacted on self-efficacy). Community study 2 designed to compare the self-efficacy and intentions of women to present for re-screening when presented with counterfactual messages. Survey data and follow up telephone interview. Component four: Collaboration with BreastScreen NSW, an intervention to ascertain the impact of counterfactual messages on behaviour - actual presentations for mammography screening. BreastScreen NSW participant survey.