The role of ethics in technology acceptance: analysing resistance to new health technologies on the example of a COVID-19 contact-tracing app.

New health technologies promise enormous benefits for human wellbeing, yet their diffusion is often inhibited by potential users' uncertainty about their consequences. Since ethics help individuals to cope with uncertainty, this study investigates the potential of ethics to promote technology acceptance. To this end, we test the influence of typical acceptance predictors (perceived health threat, privacy attitudes, and technology readiness) and two new ethics-related variables ('ethical optimism' and 'perceived governmental responsibility') on resistance to a government-issued COVID-19 contact-tracing app. Using structural equation modelling, we find significant effects of the typical acceptance predictors, and that ethical optimism and perceived governmental responsibility interact in determining the resistance to the tracing app. The paper highlights the relevance of ethics for the acceptance of new (health) technologies and suggests that the role of ethics is not confined to being a 'moral watchdog' but can serve as a powerful lever to promote their acceptance. [ABSTRACT FROM AUTHOR]