Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Monitoring of the environmental impacts of consumption is necessary for the evaluation of current performance and to support the understanding of how initiatives for change can be implemented. We discuss design issues and methodology for an Environmentally Sensitive Shopper (ESS) index to measure the environmental sustainability of food consumption at the household level. The ESS index is based on revealed consumer preferences and uses scanner data provided by the largest UK food retailer. As a pilot illustration of the methodology, we use the index to identify environmentally critical periods during the calendar year.