Spillover Effects in Pro-Environmental Behavior

Spillover effects describe the phenomenon whereby engaging in one pro‐environmental behaviour alters the likelihood of subsequent actions, either by reinforcing further sustainable choices (positive spillover) or by prompting compensatory responses that undermine additional efforts (negative spillover). Research has revealed that spillover processes operate through a variety of psychological mechanisms, including the strengthening of environmental identity, shifts in personal norms, moral licensing, and perceived goal progress. Contextual factors—such as convenience, social norms, policy incentives and the framing of interventions—further shape whether spillover will occur and in which direction. Empirical studies span laboratory experiments, longitudinal surveys and natural field interventions, illustrating that spillover can manifest across domains (for example, waste sorting to energy saving) and contexts (home, workplace, tourism). At the global level, understanding spillover dynamics is critical for designing multilevel policies and communications that harness positive synergies, avoid unintended backfire and support cumulative behavioural change. Practical applications include the sequencing of awareness campaigns, timing of financial or autonomy‐supportive incentives and the integration of goal hierarchies to sustain commitment over time.

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Spillover Effects in Pro-Environmental Behavior publication trend

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Technical terms

Spillover effect: Influence of an initial pro‐environmental action on subsequent, distinct behaviours.

Positive spillover: A facilitative interaction in which one sustainable behaviour increases the likelihood of further eco‐friendly actions.

Negative spillover: A compensatory interaction in which one sustainable behaviour reduces engagement in other pro‐environmental activities.

Environmental identity: The extent to which individuals perceive themselves as environmentally responsible, guiding consistent actions across contexts.

Moral licensing: A cognitive mechanism whereby prior virtuous acts justify later lapses in pro‐environmental behaviour.

References

1. Behavioral spillover in the circular economy: The importance of consumer goals. Journal of Environmental Psychology (2023).
2. Like ripples on a pond: Behavioral spillovers and their implications for research and policy. Journal of Economic Psychology (2015).
3. More green than gray? Toward a sustainable overview of environmental spillover effects: A Bayesian meta-analysis. Journal of Environmental Psychology (2021).
4. Waste Reduction Behaviors at Home, at Work, and on Holiday: What Influences Behavioral Consistency Across Contexts?. Frontiers in Psychology (2018).