Table 1.

Different types of discounting processes.

Application of discounting to	Original quantity Discounted quantity Involved variable
Delay of reward	Absolute reward value
	Current value
	Delay to reward
Probability of reward	Absolute reward value
	Value of probabilistic reward
	Probability of reward
Generosity	Money you have
	Money you give to another person
	Social distance from that person
Energy	Source of energy (e.g., light, sound)
	Energy distant from source
	Distance from source
Memory	Original learning
	Memory
	Time between learning and recall
Addiction or disease	Level of addiction
	Current level
	Regular dose/time frequency

Source: Rachlin (2006) and own elaboration.