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Behavioral modeling of human choices reveals dissociable effects of physical effort and temporal delay on reward devaluation.

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Academic year: 2017

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Fig 1. Task: Effort and delay discounting task. A, In Experiment 1, participants chose between a higher-reward/higher-cost (HRHC) option and a lower- lower-reward/lower-cost option (LRLC; reward magnitude = number; cost level = height of red bar)
Fig 2. Force-grips: Completion of force-grip on effort trials. Force traces from trials in which a 12s grip was exerted in Experiment 2 (A,C,E,G) and Experiment 1 (B,D,F,H)
Fig 3. Experiment 1: Comparison of effort and delay discounting. A, Two models were fitted to participants’ choice data; the hyperbolic model has previously been proposed to characterize effort and delay discounting
Table 1. Choices explained by the model (Experiment 1).
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