Motivating Community Recycling: New Zealand Curbside Trial
Promoting Public Transit in Urban Areas with Incentives and Commitment
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.
Increasing Paper Recycling in Portland Oregon Dormitories Using Incentives and Commitment
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.