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. Author manuscript; available in PMC: 2010 Apr 6.
Published in final edited form as: Judgm Decis Mak. 2009 Feb 1;4(1):1–19.

Table 1.

Values of delay discounting task rewards and associated discount rates and parameters.

Discount rate ranking Reward today V Future reward A Delay in days d Exponential discount rate if indifferent (equation 3b) Hyperbolic discount rate if indifferent (equation 4b) Hyperbolic Discount Parameter if indifferent (k)
1 78 80 162 0.00016 0.00015 0.00016
2 80 85 157 0.00039 0.00037 0.00040
3 67 75 119 0.00095 0.00090 0.00100
4 69 85 91 0.00229 0.00207 0.00255
5 55 75 61 0.00507 0.00437 0.00596
6 54 80 30 0.01302 0.01083 0.01605
7 41 75 20 0.02974 0.02267 0.04146
8 33 80 14 0.06129 0.04196 0.10173
9 31 85 7 0.13419 0.09076 0.24885