To date, studies dealing with the impact assessment of changing irrigation policies predominately rely on normative rational choice models that are subject to rather restrictive assumptions such as profit-maximizing behavior. However, there is increasing evidence that decision makers pursue...

I: Palm oil production creates negative externalities, e.g., through intensive fertiliser application. Policies to limit externalities need an effective, sustainable and efficient measure We use a business simulation game in a framed field experiment in Indonesia to test ex ante different...