We constructed three different investment products: “Eurozone Bond Series Purple”, “Eurozone Bond Series Yellow” and “Eurozone Bond Series Blue”, where the Purple-bond was always better (or at least equal) to the other two bonds; higher yield, lower risk and lower costs. The Blue-bond was also dominated by the Yellow-bond. The task at hand for the respondents was to distribute €10,000 over these three investments. The correct answer would be to allocate the full €10,000 to the Purple bond.
The screenshot below shows the webpage where respondents could access the documents and allocate their €10,000. We include this to give a feel for the task that was asked of the Dutch respondents. Superimposed in a green box are the differing characteristics of the three bond offerings. All other texts in the information documents was equal between the different Eurozone bonds.