Survey data and R code for a choice experiment on ethical chocolate consumption and supply-chain governance in Switzerland

This repository contains anonymised survey data, choice experiment material, and R code from a multilingual online survey of chocolate consumers in Switzerland conducted in June 2024. The survey was fielded in German, French, and Italian through Bilendi Schweiz AG within the [Deliberative Diets](https://www.deliberative-diets.net/) research project at the [Swiss Federal Institute for Forest, Snow and Landscape Research (WSL)](https://www.wsl.ch/en/), funded by the Swiss National Science Foundation. The survey included questions on chocolate purchasing behavior, attitudes and beliefs regarding ethically produced chocolate, socio-demographic characteristics, and a discrete choice experiment on chocolate tablet attributes. The choice experiment elicited preferences over product profiles varying by label, cocoa distribution channel, environmental impact of cocoa cultivation, place of chocolate production, and price premium. The repository underlies three related studies based on the same empirical survey. The first is [Towards an ethical chocolate supply chain: Matching Swiss consumer preferences with policy instruments](https://doi.org/10.1016/j.clrc.2025.100376), which uses the surve