Cognitive Bias in Ambiguity Judgements: Using Computational Models to Dissect the Effects of Mild Mood Manipulation in Humans.

Although the iBIC score obtained by fitting data separately for Pleasant and Unpleasant Room groups did not show an improvement over the one obtained by fitting data as one group ( Table 2 ), we found that the difference between the mean of the estimated parameter σ for Pleasant and Unpleasant groups was nearly significant even when fitting data as one group [permutation test, p = 0.052].

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