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Posterior distributions (blue: placebo, orange: haloperidol) per parameter (top row: a, Log(k); b, Drift rate coefficient; c, Nondecision time; d, Boundary separation; e, Starting point bias; f, Drift rate maximum) and group differences (bottom row, placebo–haloperidol) for the baseline condition (smaller-sooner reward = 100€). Thin (thick) horizontal lines denote 95% (85%) highest posterior density intervals.
