We study time preferences in a real-effort experiment with a one-month horizon. We report that two thirds of choices … suggest negative time preferences. Moreover, choice reversal over time is common even if temptation plays no role. We propose … and measure three distinct concepts of choice reversal over time to study time consistency. This evidence calls for an …

over time. There are two main results. When facing a costly task to be completed under a deadline, two thirds of subjects …

over time. There are two main results. When facing a costly task to be completed under a deadline, two thirds of subjects …