Economics 1st Edition by Dean Karlan,Jonathan Morduch

Exercise 17

The following information applies to Problems 5, 6, and 7: Clocky ™ is an alarm clock that rolls off your bedside table and runs away when you hit the snooze button. When the alarm goes off again, Clocky will be hiding somewhere on the opposite side of your bedroom, so that you are forced to get out of bed to turn off the alarm.
Clocky is a commitment device to help overcome time inconsistency. Which of the following are the time periods over which someone might have inconsistent preferences and need Clocky's help?
a. Between the time the person hits the snooze button and the time the alarm goes off again. b. Between the time the person sets the alarm the previous night and the time the alarm goes off.
c. Between the time the person actually gets out of bed one morning and the time he sets his alarm for the next morning.