This paper presents the findings of two Randomized Controlled Trials (RCTs) that were conducted in collaboration with the Australian Taxation Office (ATO). The first trial tests the effect of changes to letters (timing, social norms, color, and provision of information about charitable...

Massive Open Online Courses are a promising educational innovation. Yet, they suffer from high drop-out rates. As a remedy, we propose a planning prompt and test its effect on course completion and further outcomes such as course engagement and satisfaction in four large-scale randomized...

Tax noncompliance harms both social cohesion and public welfare. In the US alone, tax underpayment averaged $39 billion per year from 2008 to 2010. How can tax authorities collect outstanding payments more efficiently? Novel research by RWI in cooperation with the Australian National University...