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Magnitude-sensitive reaction times reveal non-linear time costs in multi-alternative decision-making

Fig 6

Geometric discounting of reward leads to strongly magnitude-sensitive simulated reaction times across a range of nonlinear subjective utility functions, with decisions postponed for low equal-value option sets.

Simulation parameters were: prior mean and variance , observation noise variance , temporal cost γ = 0.1, and simulation timestep dt = 5×10⁻³. Lines are the mean reaction time for 10⁴ simulations, 95% confidence intervals are shown as red shading (mostly invisible because smaller than the linewidth). Non-decision time was implicitly zero.

doi: https://doi.org/10.1371/journal.pcbi.1010523.g006