TY - GEN AU - Martínez Villarreal, Déborah AU - Parilli, Cristina AU - Rojas Méndez, Ana María AU - Scartascini, Carlos AU - Simpser, Alberto TI - Do You Have COVID-19?: How to Increase the Use of Diagnostic and Contact-Tracing Apps PY - 2021 Y1 - 2021/03/25 DO - 10.18235/0003131 AB - Diagnostic and contact tracing apps are an important weapon against contagion during a pandemic. We study how the content of the messages used to promote the apps influences adoption by conducting a survey experiment on approximately 23,000 Mexican adults. Respondents were randomly assigned to one of three different prompts, or a control condition, before stating their willingness to adopt a diagnostic app and contact-tracing app. The prompt emphasizing government efforts to ensure data privacy, which has been one of the most common strategies, reduced willingness to adopt the diagnostic app by about 4 percentage points and the contact tracing app by 3 percentage points. An effective app promotion policy must understand individuals' reservations and be wary of unintended reactions to naive reassurances. UR - https://doi.org/10.18235/0003131 ER -