I am looking for articles or case studies that quantify how long and by what method an education and outreach campaign persists long-term. I am looking for environmental campaigns but would take input from the health sector too. For example, if a recycling program provides multiple targeted education and outreach "touches" to get households to recycle a particular commodity or keep a particular contaminate out, how long would one expect that the change would last before needing to go back into the community and message again as a reminder? Any research with not only short-term evaluation results but an analysis showing "long-term" change using targeted outreach for an environmental action would be welcome.
Thank you in advance,
Social Marketing Association of North America