Table 1.

Overview of experiments.

Experiment	Objective	Sample	Mediators Measured	Dependent Outcome	Findings
1	To test effect of salient disease concerns on contact tracing app use.	471 French	None	Intentions to download StopCovid (binary)	Salient COVID-19 concerns reduced intentions to download StopCovd.
2	To test indirect effect of salient disease concerns on contact tracing app use via greater social conservatism.	202 Australians	Social conservatism	Choice to download CovidSafe (binary)	Salient COVID-19 concerns decreased choice to download CovidSafe due to greater social conservatism.
3	To test indirect effect of salient disease concerns on contact tracing app use via greater privacy concerns.	1005 Americans	Personal privacy concerns	Willingness to download app (Likert)	Salient COVID-19 concerns decreased willingness to download app due to greater personal privacy concerns.