Discounting and extraction behavior in continuous time resource experiments

Experimenting with dynamic games raises issues about implementing discounting in experiments. Theoretical rational decision-makers evaluate payoff streams by converting them to a reference period, often “time zero.” In experiments, subjects can adapt their strategy continuously. We explore individual behavior in a dynamic resource extraction experiment with two treatments: “z-discounting” (evaluating gains at time zero) and “p-discounting” (evaluating gains in present-time equivalents). Contrary to theoretical predictions, our data shows a significant positive treatment effect, indicating more substantial extraction under p-discounting. This challenges the theoretical model and prompts discussion on methodological considerations for discounting in laboratory settings.