Fig. 6

Average trajectory length of each condition in 2-D isomap spaces, both k-nearest neighbor approach (a) and the epsilon-based approach (b). In k-isomap, the average length in Neutral: \(46.49 \pm 1.85\), Maintain: \(55.99 \pm 2.42\), Reappraise: \(63.30 \pm 1.26\); in \(\varepsilon\) -isomap , the average length in Neutral: \(32.21 \pm 1.37\), Maintain: \(40.62 \pm 1.82\), Reappraise: \(47.61 \pm 1.74\). Both suggest that Thought Chart travels in longer distance in more complex task conditions. Significant findings in group t test are indicated with ^**\((p<0.01)\) and ^*\(p<0.05\)