Behavioral Economics

Julia Nafziger (Aarhus University)

  • Nudging in complex environments

  • We study the effects of reminder nudges using a novel experimental approach based on a computer game. The game exposes subjects to a complex environment in which they have to pay attention to and perform multiple, different kinds of actions within a short period of time. The set-up allows us to test the effect of reminders not only on the reminded, but also on non-reminded actions and thus to observe whether nudges have (positive or negative) spillovers.  Further, it allows to test the effects of multiple vs. single reminders. We test the effects both in the short and long run, i.e., after the withdrawal of the reminder. We observe that both single and multiple nudges have positive effects in the short run — multiple reminders more so than single reminders: while they lead to crowding-out of non-reminded actions, the positive effect on reminded action dominates. Yet, after withdrawal of the reminders, the negative spillover effect prevails, while the positive effect becomes very small so that, overall, reminders have no effect.

  • Location:
  • Address:
Marja-Liisa Halko

University of Helsinki

marja-liisa.halko at