In this paper, we systematically analyze the empirical importance of standard conditions for the validity and generalizability of field experiments: the internal and external overlap and unconfoundedness conditions. We experimentally varied the degree of overlap in disjoint sub-samples from a...

Lack of information about COVID-19 and its spread may have contributed to excess mortality at the pandemic's onset, In April and May 2020, we implemented a randomized controlled trial with more than 3,000 households in 150 Bangladeshi villages, Our one-to-one information campaign via phone...