Marcus, Siedler and Ziebarth (2022 American Economic Journal: Economic Policy) examine the long-run health effects of a universal sports-club voucher program that was introduced in Saxony for primary school children in 2009. In 2018, the authors designed a survey that targeted the affected...

Esguerra, Vollmer and Wimmer (2023) examined respondents' desire to influence other people's choices via their own behaviour. They conducted a field study on German residents' registration for the COVID-19 vaccination, where 1,401 "Senders" made their registration decision, which could then be...