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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Please note that all times are shown in the time zone of the conference. The current conference time is: 10th Sept 2026, 07:06:41pm CEST (Norway)

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Daily Overview

Session

Green preferences and pro-environmental behavior
Location: Auditorium F
Session Chair: Mireille Chiroleu-Assouline, University Paris 1 Panthéon Sorbonne

Presentation 1

Nudging, fast and slow: Experimental evidence from food choices under time pressure

Paul Lohmann¹, Elisabeth Gsottbauer², Christina Gravert³, Lucia Reisch¹

1: University of Cambridge, United Kingdom; 2: London School of Economics and Political Science (LSE), United Kingdom; 3: University of Copenhagen, Denmark

Discussant: Eduard Alonso-Pauli (Universitat de les Illes Balears)

Understanding when and why nudges work is crucial for designing interventions that consistently and reliably change behaviour. This paper explores the relationship between decision-making speed and the effectiveness of two nudges – carbon footprint labelling and menu repositioning – aimed at encouraging climate-friendly food choices. Using an incentivized online randomized controlled trial with a quasi-representative sample of British consumers (N=3,052) ordering meals through an experimental food-delivery platform, we introduced a time-pressure mechanism to capture both fast and slow decision-making processes. Our findings suggest that menu repositioning is an effective tool for promoting climate-friendly choices when decisions are made quickly, though the effect fades when subjects have time to revise their choices. Carbon labels, in contrast, showed minimal impact overall but reduced emissions among highly educated and climate-conscious individuals when they made fast decisions. The results imply that choice architects should apply both interventions in contexts where consumers make fast decisions, such as digital platforms, canteens, or fast-food restaurants to help mitigate climate externalities. More broadly, our findings suggest that the available decision time in different contexts might at least partly explain differences in effect sizes found in previous studies of these nudges.