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The power of personalised feedback: evidence from an indoor air quality experiment

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  • Abdel Sater, Rita
  • Perona, Mathieu
  • Huillery, Elise
  • Chevallier, Coralie

Abstract

Indoor air pollution is one of the leading causes of morbidity and mortality worldwide, but its sources and impacts are largely misunderstood by the public. In a randomised controlled trial including 281 households in France, we test two interventions aimed at changing indoor polluting behaviour by raising households’ awareness of health risks associated with indoor air pollution. While both generic and personalised information increased knowledge, only personalised information including social comparison feedback changed behaviour, leading to a reduction of indoor PM2.5 (particulate matter with an aerodynamic diameter ≤2.5 µm) emissions by 20% on average. Heterogeneous treatment effects show that this effect is concentrated on the most polluted households at baseline, for whom the reduction reaches 40%.

Suggested Citation

  • Abdel Sater, Rita & Perona, Mathieu & Huillery, Elise & Chevallier, Coralie, 2026. "The power of personalised feedback: evidence from an indoor air quality experiment," Behavioural Public Policy, Cambridge University Press, vol. 10(3), pages 632-669, July.
    • Handle: RePEc:cup:bpubpo:v:10:y:2026:i:3:p:632-669_10
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