Model ‘postdiction’ of the optimality index.

<p>Each bar represents the group-averaged optimality index for a specific session, for each prior (indexed from 1 to 8, see also <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003661#pcbi-1003661-g002" target="_blank">Figure 2</a>) and cue type, either low-noise cues (red bars) or high-noise cues (blue bars); see also <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003661#pcbi-1003661-g005" target="_blank">Figure 5</a>. Error bars are SE across subjects. The continuous line represents the ‘postdiction’ of the best suboptimal Bayesian observer model, model SPK-P-L; see ‘Analysis of best observer model’ in the text). For comparison, the dashed line is the ‘postdiction’ of the best suboptimal observer model that follows Bayesian Decision Theory, BDT-P-L.