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. 2009 Oct 20;4(10):e7362. doi: 10.1371/journal.pone.0007362

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Kurth-Nelson, Redish.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) State-space used. (B–E) Mazur-plots. These plots show the delay at the indifference point where actions and are selected with equal frequency, as a function of the delay . The ratio of actions is an observable measure of the relative values of the two choices. Blue circles represent output of the model, and green lines are least-squares fits. For hyperbolic discounting, the slope of the line will equal the ratio , with a non-zero -intercept. Compare [39], [40].

Inline graphic — (A) State-space used. (B–E) Mazur-plots. These plots show the delay at the indifference point where actions and are selected with equal frequency, as a function of the delay . The ratio of actions is an observable measure of the relative values of the two choices. Blue circles represent output of the model, and green lines are least-squares fits. For hyperbolic discounting, the slope of the line will equal the ratio , with a non-zero -intercept. Compare [39], [40].