Li wants to decrease the amount of pop that they drink, and…

Li wants to decrease the amount of pop that they drink, and they arrange a contingency for meeting their goal.  If they drink more than two cans of pop during the day, they cannot watch television in the evening.  What type of contingency has Li arranged?​

Jeff wants to decrease the number of cigarettes that he smok…

Jeff wants to decrease the number of cigarettes that he smokes.  Jeff writes an agreement with his roommate stating a specific level of the behavior that must be met, and the consequences for meeting (reinforcers) and not meeting (punishment) the goal.  What type of strategy is Jeff using?​