Motivating Community Recycling: New Zealand Curbside Trial

Cases
Groups 2 and 3, the verbal commitment groups, recycled considerably more than the control group (who were not asked for a verbal commitment). Only 47% of the participants in group…

Using Commitment and Feedback to Encourage Apartment Complex Dwellers to Participate in Curbside Recycling

Cases
DeLeon, I. G., & Fuqua, R. W. (1995). The effects of public commitment and group feedback on curbside recycling. Special Issue: Litter control and recycling. Environment and Behavior, 27, 2, 233-250.
Curbside paper recycling increased in each intervention group. The commitment only group recycled 5% more, while the feedback group increased by 25%. However, when these two too…

Increasing Paper Recycling in Portland Oregon Dormitories Using Incentives and Commitment

Cases
Wang, T. H. & Katzev, R. D. (1990). Group commitment and resource conservation: Two field experiments on promoting recycling. Journal of Applied Social Psychology, 20, 4, Part 1, 265-275.
During the intervention period, the three treatment groups showed a dramatic increase in recycling. Paper recycling for the group commitment, incentive and individual commitment …

Communication and Commitment Improve Participation in Curbside Recycling in Claremont California

Cases
Burn, S. M., & Oskamp, S. (1986). Increasing community recycling with persuasive communication and public commitment. Journal of Applied Social Psychology, 16, 1, 29-41.
In both the commitment and the combined group, 42% of households began recycling. Thirty-nine percent started participating in the communication group. In contrast, only 11% began…

McDonald's Waste Reduction Task Force

Cases
December 21, 1999 marked the tenth anniversary of McDonald's USA and the Environmental Defense Fund (EDF) and their groundbreaking alliance in 1989. Their partnership has replaced…

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