Figure I.

shows the learning time courses for all four conditions of our task. Each row of the raster images shows the choices of one of the 47 subjects in each of the four conditions. Go responses are depicted in white and no-go responses are depicted in grey. The overlaid black lines depict the time-varying probability, across subjects, of making a go response. The colored lines show the same time-varying probability, but evaluated on choices sampled from the model (blue for RW + noise; green for RW + noise + bias; brown, the winning model, for RW + noise + Pav). Adapted from [21].