How Can I Get a Commitment Device?

Katy: I remember learning about commitment devices for the first time. The researchers ran a study in which they had people outline where, when and how they were planning to get vaccinated. And what was astonishing to me is that it significantly increased the vaccination rate despite the fact that you weren't accountable to anyone in this intervention. Katy: We can be very over optimistic about our ability to use will power to avoid temptation.