Text Message Blast
The second campaign was a mass text message sent to all customers of Nigeria’s largest mobile phone provider in each study community, after the community received either the treatment or placebo film. The message alerted individuals to the corruption reporting platform and explained the ease of reporting. In this way, the message was designed to reduce barriers to reporting by clearly explaining the reporting campaign, allowing recipients to simply hit “reply” to report, and emphasizing that correspondence with the corruption platform was free. In total we sent out messages to 683,000 subscribers across the 106 study communities.
The mass text was sent to people in each community on a randomly-assigned date a few weeks following the film distribution, using a step-wedge design. By virtue of this randomization, we are able to estimate the causal effect of the message, by comparing response rates before and after the randomly-assigned date of the nudge.