Great!!

Thanks!! :)

These two demonstrate that participants will respond similarly for real and hypothetical rewards in delay discounting studies.

1. Johnson & Bickel (2002). Within-subject comparison of real and hypothetical money rewards in delay discounting. JEAB

2. Kirby & Marakovic (1996). Delay Discounting Probabilistic Rewards: Rates decrease as amounts increase. Psychon Bull Review

Thank you very much for your help!

Shalom Yaakov,

Here is a more recent paper on delay discounting of real vs. hypothetical reward:

https://s3.amazonaws.com/academia.edu.documents/41898383/Delay_discounting_of_real_and_hypothetic20160202-7593-2fmhk5.pdf?AWSAccessKeyId=AKIAIWOWYYGZ2Y53UL3A&Expires=1532959653&Signature=QgEj63A%2FptB%2F6%2B9%2BO8IPHGPQIBY%3D&response-content-disposition=inline%3B%20filename%3DDelay_discounting_of_real_and_hypothetic.pdf

As well as two studies by the same research team on differential response of alcoholics to real vs. hypothetical reward:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4362679/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3266442/

Thank you very much for your help!