Case Studies

This section contains case studies of community programs primarily from across North America. It includes a broad sampling of programs to offer a wide variety of approaches and tools used, locations, types of organizations and participants, activities being promoted and problems being addressed. Most of these case studies illustrate approaches that have worked. However, examples of potential pitfalls are also included to provide you with a realistic map of the terrain ahead.

We are actively looking for new case studies with measured impact results. Do you know of any that might make good additions to this site? Please let us know.

All the Case Studies and examples are described in the past tense, including programs that are still operating. If the program is still operating, the Case Study summary is written in the present tense.

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Climate Matters Program for TV Weathercasters  Environment

Climate Matters trains and supports American TV weathercasters to report on the local impacts of climate change while reflecting current scientific knowledge and concerns. The program provides participating newscasters with weekly story packages with local data and broadcast-quality graphics that visualize the data. Because of an overt conflict in the meteorology community about opposing views of climate change, the program engaged a conflict mediator who worked with small groups of opinion-leading weathercasters to surface and work through the entrenched conflicts. As climate reporting became increasingly normative, the program ensured that everyone in the weathercasting community knew the behaviors were gaining in popularity. As of 31 October 2020, there were 968 participating weathercasters in 483 local TV stations, in 92% of all US media markets and 99 of the top 100 media markets. Viewers exposed to their climate education became more likely to understand that climate change is already a 'here, now, us' problem.

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Canada-Wide Ban on Menthol Cigarettes  Health

Bans on menthol cigarettes across Canada from 2015 to 2017 led to a significant increase in the numbers of smokers who attempted to quit and who quit successfully, while reducing relapse rates among former smokers. Canada was the one of the first countries to implement a ban on menthol cigarettes, and the first country where such a ban was evaluated.

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Landmark Case Study Heat Loss Images, Norm Appeals Raise Impacts in Medicine Hat  Environment

A Randomized Controlled Trial tested the impacts of providing consumers, on their monthly utility bills, with high-resolution infrared images of their houses, information about their heat loss relative to their neighbors, and estimated savings from improving their home’s insulation and air tightness. This treatment was twice as effective as a traditional Home Energy Report (HER) treatment. This demonstrates the power of visual cues that help make the intangible more vivid, concrete, and actionable. This case study also illustrates how norm appeals can backfire when descriptive norms are provided to those who are already doing “better” than most, without also providing an affirming injunctive norm. Designated a Landmark case study in 2020.

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Landmark Case Study Seattle’s Just One Trip Phase II  EnvironmentHealth

Just One Trip Phase II illustrates the use of Propensity Modelling / Predictive Analysis, Street Ambassadors, Quality Online User Experience (UX), and trip planning to reduce the proportion of single-occupant car trips in Seattle WA, USA. It engaged over 21,000 people and on average participants reduced four drive-alone trips per week per person. Designated a Landmark case study in 2020.

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Landmark Case Study City of Austin’s Leave Time Travel Incentive  EnvironmentHealth

The City of Austin reduced employee commute travel by one million vehicle miles within six months of making its Leave Time Reward (LTR) a permanent incentive. During this period, the percentage of drive-alone trips fell from 53% to 41%. Attribution of these impacts to the City’s time off incentive policy is strengthened because that policy was introduced in the pilot study, then withdrawn after the pilot, then later reintroduced for the permanent program (Reversal Design.) Designated a Landmark case study in 2020.

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