Encouraging Environmentally Friendly Shopping using Prompts, Commitment and Norms

Cases
Analysis of electronic inventories indicated that the prompts did not increase the purchase of targeted items. That is, items that were identified with shelf-talkers (prompts) as…

Using Commitment to Reduce Energy Consumption in Iowa City

Cases
Pallak, M.S., D.A. Cook and J.J. Sullivan (1980). Commitment and Energy Conservation. In L. Bickman (ed.), Applied Social Psychology Annual 235-253, Beverley Hills, Ca: Sage.
Evaluation after one month revealed that public commitment had reduced energy consumption by 10-20 %. Furthermore, this behavior change was evident throughout the year their mete…

Reducing Lunchtime Garbage Produced by New Brunswick Students Using Prompts and Commitment

Cases
The litterless lunch reduced the volume of garbage produced by 478.29 in or approximately 1/2 a bag. In addition, there was a reduction in weight by 5.93 lbs.

Improving Energy Conservation With Effective Home Audit Programs in California Using Communication and Commitment

Cases
Aronson, E. (1990). Applying social psychology to desegregation and energy conservation. Special Issue: Illustrating the value of basic research. Personality and Social Psychology Bulletin, 16, 1, 118-132.
Since the home audit program is expensive to complete (US$ 115), PG&E hoped to make the visits as influential as possible. Through the use of communication and commitment, audito…

Using Commitment and Communication to Increase Grass Cycling in Suburban Neighborhoods

Cases
Cobern, M. K., Porter, B.E., Leeming, F.C., & Dwyer, W.O. (1995). The effect of commitment on adoption and diffusion of grass cycling. Special Issue: Litter control and recycling. Environment and Behavior, 27, 2, 213-232.
Before the introduction of the behavior change tools, grass bags were present at curbside 50% of the time. After four weeks of intervention, the commitment group had reduced this…

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…

The Effect of Mild and Strong Public Commitments on Energy Conservation in Jackson, Michigan

Cases
Shippee, G. E., & Gregory, W. L. (1982). Public commitment and energy conservation. American Journal of Community Psychology, 10, 1, 81-93.
It was anticipated that the strong commitment group would consume less energy than the other group. However, this was not the case. The mild commitment group used 30% less natur…

Promoting Public Transit in Urban Areas with Incentives and Commitment

Cases
Bachman, W. , & Katzev, R. (1982). The effects of non-contingent free bus tickets and personal commitment on urban bus ridership. Transportation Research, 16A, 2, 103-108.
All three treatment conditions were successful in increasing bus ridership. Furthermore, these results were maintained during both follow up measurements. In contrast, there wa…

Using Group Commitment to Increase Paper Recycling in a Nursing Home in Portand, Oregon

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.
After the implementation of group commitment, the weight of the recycled paper increased by 47%. Furthermore, this increase remained during the four week follow up period even th…

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…

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