Table 2.
Summary of posterior distributions
| ON
|
OFF
|
Contrast
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Parameter | m | HDI | m | HDI | m | HDI | BF | |||
| Boundary separation | 1.849 | 1.524 | 2.178 | 1.659 | 1.424 | 1.882 | 0.19 | −0.05 | 0.434 | 16.5 |
| Boundary change | 0.008 | −0.1 | 0.111 | 0.018 | −0.04 | 0.08 | −0.01 | −0.1 | 0.08 | 0.68 |
| Drift rate scaling | 3.566 | 1.886 | 5.618 | 1.864 | 0.721 | 2.995 | 1.702 | −0.22 | 3.592 | 55.3 |
| Nondecision time | 0.326 | 0.233 | 0.422 | 0.224 | 0.162 | 0.287 | 0.102 | 0.03 | 0.179 | 227 |
| Learning rate + | 0.032 | 0.003 | 0.072 | 0.057 | 0.008 | 0.118 | −0.02 | −0.08 | 0.031 | 0.19 |
| Learning rate − | 0.023 | 0 | 0.08 | 0.04 | 0 | 0.12 | −0.02 | −0.11 | 0.046 | 0.24 |
Estimated means for off and on medication groups, as well as the contrast for on–off. Values in the HDI columns represent the 95% highest density intervals. Bayes factors (BF) for directional effects are calculated as i/(1 – i), where i is the integral of the posterior distribution from 0 to + ∞