期刊
JOURNAL OF THE EXPERIMENTAL ANALYSIS OF BEHAVIOR
卷 77, 期 2, 页码 129-146出版社
SOC EXP ANALYSIS BEHAVIOR INC
DOI: 10.1901/jeab.2002.77-129
关键词
delay discounting; real rewards; hypothetical rewards; magnitude; hyperbolic; choice; humans
资金
- NIDA NIH HHS [R01 DA 11692, T32 DA07242] Funding Source: Medline
- NATIONAL INSTITUTE ON DRUG ABUSE [T32DA007242, R01DA011692] Funding Source: NIH RePORTER
A within-subject design, using human participants, compared delay discounting functions for real and hypothetical money rewards. Both real and hypothetical rewards were studied across a range that included $10 to $250. For 5 of the 6 participants, no systematic difference in discount rate was observed in response to real and hypothetical choices, suggesting that hypothetical rewards may often serve as a valid proxy for real rewards in delay discounting research. By measuring discounting at an unprecedented range of real rewards, this study has also systematically replicated the robust finding in human delay discounting research that discount rates decrease with increasing magnitude of reward. A hyperbolic decay model described the data better than an exponential model.
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