The long-term impact of matching and rebate subsidies when public goods are impure : field experimental evidence from the carbon offsetting market


Kesternich, Martin ; Löschel, Andreas ; Römer, Daniel


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URL: https://ub-madoc.bib.uni-mannheim.de/37392
URN: urn:nbn:de:bsz:180-madoc-373924
Document Type: Working paper
Year of publication: 2014
The title of a journal, publication series: ZEW Discussion Papers
Volume: 14-098
Place of publication: Mannheim
Publication language: English
Institution: Sonstige Einrichtungen > ZEW - Leibniz-Zentrum für Europäische Wirtschaftsforschung
MADOC publication series: Veröffentlichungen des ZEW (Leibniz-Zentrum für Europäische Wirtschaftsforschung) > ZEW Discussion Papers
Subject: 330 Economics
Classification: JEL: H41 , C93 , D03 , L92,
Keywords (English): Voluntary carbon offsets , randomized field experiment , public goods , rebate subsidy , matching subsidy
Abstract: In this paper, we investigate both short- and long-term impacts of financial stimuli on public goods provision when contributions are tied to individual harm-related behavior. We conduct a large-scaled field experiment to examine voluntary contributions to a carbon offsetting program during the online purchase of a bus ticket. We systematically vary the individual payoff structure by introducing different matching grants (1/3:1, 1:1, 3:1) and price rebates (r-25%, r-50%, r-75%). Our results show that price rebates are more effective than matching schemes in raising participation rates while matching grants induce higher contributions to the offsetting program. We suspect differences in the personal responsibility for the compensated emissions to drive this result. Analyzing repeated bookings, we find decreasing treatment effects for returning customers except for the case of 1:1 matching grants. The equal matching scheme is also the only intervention that increases net contributions of customers compared to the control group.

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Kesternich, Martin ; Löschel, Andreas ; Römer, Daniel (2014) The long-term impact of matching and rebate subsidies when public goods are impure : field experimental evidence from the carbon offsetting market. Open Access ZEW Discussion Papers Mannheim 14-098 [Working paper]
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