From 1997 to 2005, an astonishing 5,200 million USD was invested to reduce cocaine production in Colombia, the world's main cocaine producer. However, little is known about the effectiveness of policies targeting coca cultivation. This paper uses a surveybased experiment to evaluate the effects...

Hypothetical bias is one of the main issues bedeviling the field of nonmarket valuation. The general criticism is that survey responses reflect how people would like to behave, rather than how they actually behave. In our study of climate change and emissions reductions, we took advantage of the...

We design a donations vs. own money choice experiment and compare the results from three different treatments. In two of the treatments the pay-offs are hypothetical. In the first of these, a short cheap talk script was used and subjects were required to state their own preferences in this...