Roe, Brian E.

May, 2023

By: Qi, Danyi; Roe, Brian E.; Apolzan, John W.; Martin, Corby K.
We formulate an empirical learning model suitable for understanding individual behavioral responses in such environments. We estimate this model using data collected about the joint personal decisions of food selection, intake, and waste during a study in which users photographed their meal selections and plate waste over the course of a week with a cell phone. We found a substantial learning-by-doing effect in plate-waste reduction: Those who document greater plate waste in their captured photographs waste less on subsequent days. Further, we identified that participants reduced plate waste by learning to eat more rather than by learning to reduce the amount of food selected.

May, 2020

By: Plakias, Zoe T.; Klaiber, H. Allen ; Roe, Brian E.
Local food offerings differ within and across school districts with farm-to-school programs. Using two waves of nationwide data, we estimate the relationship between two supply chain indicatorsÑ local foodshed size and length of local food supply chainÑand districtsÕ local food expenditures. We find that increasing foodshed radius by 50 miles and sourcing from intermediaries increases the average districtÕs local spending by 8% and 26%, respectively. DistrictsÕ actions to increase student access to local foods by widening definitions of local or sourcing through intermediaries thus have the potential to reduce localized benefits to nearby farmers and community members.