Table 1.

Free parameters in the drift diffusion model.

Variable	Description
$c_0^{\mu }$	Baseline value of drift
$c_R^{\mu }$	Effect of $\mathrm{\Delta }R$ on drift
$c_I^{\mu }$	Effect of $\mathrm{\Delta }I$ on drift
$c_0^{\beta }$	Baseline value of threshold
$c_R^{\beta }$	Effect of $\mathrm{\Delta }R$ on threshold
$c_I^{\beta }$	Effect of $\mathrm{\Delta }I$ on threshold
$c_0^{\alpha }$	Baseline value of bias
$c_R^{\alpha }$	Effect of $\mathrm{\Delta }R$ on bias
$c_I^{\alpha }$	Effect of $\mathrm{\Delta }I$ on bias
$T_0$	Non-decision time

Note that all parameters are horizon dependent giving a total of 20 free parameters overall, per subject.