Temporal discounting rate - small stakes is a measure of the tendency to discount future rewards and take an immediate but smaller payoff over waiting for a later but larger one. Temporal discounting tendency was estimated for both large and small stakes–this is the small stakes variable (i.e., the questions refer to smaller amounts of money). The current payment is fixed at $10 and the delay period is fixed at one month for all questions. Higher score means less likely to wait for a later but larger reward.

To estimate the subject specific discounting rate, we use a well-established hyperbolic function based on the odds of choosing the delayed reward over the immediate reward at different values. See reference for details.

Participants are asked the following questions:

Would you prefer $10 in cash right now or [insert 1-7 from below] in a month?

1. $14
2. $20
3. $15
4. $11
5. $18
6. $13
7. $30