Mobile applications hold promise to foster sustainable mobility behavior, but evaluations of their effectiveness are subject to a number of empirical challenges. We conduct a randomized controlled trial with three distinctive features: unobtrusive tracking of the control group, limited sample...

Evaluations of economic interventions usually focus on one target behavior. This study extends the evaluation scope to multiple untargeted behaviors. We evaluate a hot water saving intervention in a natural field experiment. Despite an exclusive focus on hot water, the intervention changes...

Behavioral interventions may have unintended side effects. At worst, negative side effects may offset the intended effect. We study the effects of a hot water saving intervention on the consumption of cold water and room heating in a randomized controlled experiment in 782 buildings in...