What system is used when a person puts money in a jar each time the nicotine urge hits?

The system described is a form of Behavioral Economics and can be specifically referenced as a Commitment Device. This technique is often utilized in habit-breaking strategies, where an individual takes active steps to deter undesirable behavior—in this case, smoking.

1. Positive Reinforcement: By putting money in a jar when the urge hits, the individual creates a tangible consequence for their urge, which can highlight the cost of their smoking habit.
2. Aversion Strategy: Over time, watching the jar fill can provide a visual reminder of the money spent and the habit's impact, potentially reducing the urge to smoke.
3. Accountability: This method can also foster accountability, as the person may feel more inclined to avoid smoking to prevent adding to the jar.

Ultimately, this strategy helps in changing behavior by associating urges with a financial consequence, reinforcing the idea of saving money while working toward quitting smoking.