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Nudging Away from Plastic Bags with Charitable Donations
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This study used a natural experiment to test whether a charitable donation incentive for returning shopping bags reduced disposable plastic bag use at a grocery store, finding that the program significantly decreased bag usage. Token donation programs offer a politically feasible way to reduce single-use plastic consumption without mandatory bans.
To respond to the environmental problems posed by disposable plastic bags, several mechanisms exist, such as bag taxes and bans, but such policies are infeasible in several U.S. states and municipalities. This study uses a social quasi-experiment to examine the effect of a voluntary token-donation program, which reduces disposable plastic bag use by providing a small charitable donation incentive. We find that the token-donation program reduces the probability of disposable bag use by 11.4-12.9 percentage points, representing about 30%-34% decrease in bag use. Our results demonstrate effective mechanisms to reduce plastic bags exist without government-mandated policy.
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Effectiveness of intervention on behaviour change against use of non-biodegradable plastic bags: a systematic review
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Researchers systematically reviewed government policies aimed at reducing single-use plastic bag consumption, finding that outright bans and higher consumer taxes are significantly more effective than regulations based only on bag thickness. The results show that well-designed public policy can shift consumer behavior toward more sustainable choices, though the behavioral changes can fade without ongoing reinforcement.
Evaluating plastic bag levies: A systematic review of behavioural, regulatory, and normative pathways
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This systematic review following PRISMA 2020 guidelines evaluated the effectiveness of plastic bag levies and related interventions across 16 eligible studies. Findings showed economic instruments like levies produce the largest and most consistent reductions in plastic bag consumption, while multi-layered strategies combining charges with education and social norms offer the greatest long-term effectiveness.
A Field Experiment on Reducing Drinking Straw Consumption by Default
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Researchers found that setting the default to not providing a plastic straw (requiring customers to actively request one) significantly reduced straw consumption compared to offering straws automatically. The study demonstrates that simple default-change nudges can meaningfully shift plastic use behaviors without requiring outright bans.
Government Efforts in Managing Plastic Bags Usage
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A survey study in Indonesia found that government regulations alone do not effectively reduce consumer plastic bag use, but that cultivating eco-friendly awareness and values among consumers can be a more effective lever for behavior change. The findings have implications for designing more effective plastic reduction policies.
A systematic literature review of voluntary behaviour change approaches in single use plastic reduction
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This systematic review examines efforts to voluntarily reduce single-use plastic consumption through behavior change rather than legislation. The research finds that while government bans on plastics are effective, voluntary approaches that respect individual choice can also make a difference. Understanding what motivates people to reduce plastic use is key to tackling the microplastic pollution problem at its source.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.