Recent studies investigate policies motivating consumers to make an active choice as a way to protect unsophisticated consumers. We analyse the optimal timing of such choice-enhancing policies when a firm can strategically react to them. In our model, a firm provides an automatic enrollment or...

Nudges are popular instruments in the toolbox of policymakers. Yet, empirical evidence suggests some of these interventions can influence decisions which were not initially targeted, raising the risk to undermine their effectiveness. To analyse such spillover effects, I develop micro-foundations...

The contribution of this paper is twofold. First, a thorough presentation of the state of the art of the New Keynesian Macroeconomic model is provided. A discussion of its empirical caveats follows and some recent extensions of the standard model are evaluated in more detail. Second, a key...