Matthias Weber (University of St. Gallen) will present his joint paper "Intertemporal Prospect Theory".
Prospect Theory is the most prominent contender of expected utility theory to describe decisions under risk. In atemporal contexts, prospect theory is well understood.
In intertemporal contexts, however, it is not clear how prospect theory should be applied (in particular, whether probabilities should be weighted within time periods or whether the probabilities of present values should be weighted).
It is also unclear what parametric specifications of probability-weighting and value functions should be used.
Findings from a pre-registered experiment on a representative sample suggest that an application of prospect theory weighting probabilities of present values predicts decisions best.
Estimated probability weighting functions are very similar to those typically estimated inatemporal settings, while value functions are almost linear with a loss aversion coefficient close to one.